From 5ca9fd54e3d75489ff9c70d7af6e0b9a390dd656 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Tue, 6 May 2008 17:38:30 +0300 Subject: s390: KVM guest: fix compile error Fix kvm compile error: Commit c45a6816c19dee67b8f725e6646d428901a6dc24 (virtio: explicit advertisement of driver features) and commit e976a2b997fc4ad70ccc53acfe62811c4aaec851 (s390: KVM guest: virtio device support, and kvm hypercalls) don't like each other: CC drivers/s390/kvm/kvm_virtio.o drivers/s390/kvm/kvm_virtio.c:224: error: unknown field 'feature' specified in initializer drivers/s390/kvm/kvm_virtio.c:224: warning: initialization from incompatible pointer type make[3]: *** [drivers/s390/kvm/kvm_virtio.o] Error 1 Cc: Adrian Bunk Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky Acked-by: Christian Borntraeger Acked-by: Carsten Otte Signed-off-by: Avi Kivity --- drivers/s390/kvm/kvm_virtio.c | 40 +++++++++++++++++++++++----------------- 1 file changed, 23 insertions(+), 17 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index 47a7e6200b26..9f55ce6f3c78 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -78,27 +78,32 @@ static unsigned desc_size(const struct kvm_device_desc *desc) + desc->config_len; } -/* - * This tests (and acknowleges) a feature bit. - */ -static bool kvm_feature(struct virtio_device *vdev, unsigned fbit) +/* This gets the device's feature bits. */ +static u32 kvm_get_features(struct virtio_device *vdev) { + unsigned int i; + u32 features = 0; struct kvm_device_desc *desc = to_kvmdev(vdev)->desc; - u8 *features; + u8 *in_features = kvm_vq_features(desc); - if (fbit / 8 > desc->feature_len) - return false; + for (i = 0; i < min(desc->feature_len * 8, 32); i++) + if (in_features[i / 8] & (1 << (i % 8))) + features |= (1 << i); + return features; +} - features = kvm_vq_features(desc); - if (!(features[fbit / 8] & (1 << (fbit % 8)))) - return false; +static void kvm_set_features(struct virtio_device *vdev, u32 features) +{ + unsigned int i; + struct kvm_device_desc *desc = to_kvmdev(vdev)->desc; + /* Second half of bitmap is features we accept. */ + u8 *out_features = kvm_vq_features(desc) + desc->feature_len; - /* - * We set the matching bit in the other half of the bitmap to tell the - * Host we want to use this feature. - */ - features[desc->feature_len + fbit / 8] |= (1 << (fbit % 8)); - return true; + memset(out_features, 0, desc->feature_len); + for (i = 0; i < min(desc->feature_len * 8, 32); i++) { + if (features & (1 << i)) + out_features[i / 8] |= (1 << (i % 8)); + } } /* @@ -221,7 +226,8 @@ static void kvm_del_vq(struct virtqueue *vq) * The config ops structure as defined by virtio config */ static struct virtio_config_ops kvm_vq_configspace_ops = { - .feature = kvm_feature, + .get_features = kvm_get_features, + .set_features = kvm_set_features, .get = kvm_get, .set = kvm_set, .get_status = kvm_get_status, -- cgit v1.2.3 From c5fb920aec2090a44aa4c33546b9f3c3affa538c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 16 May 2008 17:55:12 -0700 Subject: s390: fix race in device_create There is a race from when a device is created with device_create() and then the drvdata is set with a call to dev_set_drvdata() in which a sysfs file could be open, yet the drvdata will be NULL, causing all sorts of bad things to happen. This patch fixes the problem by using the new function, device_create_drvdata(). Cc: Kay Sievers Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Cornelia Huck Signed-off-by: Greg Kroah-Hartman --- drivers/s390/char/vmlogrdr.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c index e8487347e4d4..2c2428cc05d8 100644 --- a/drivers/s390/char/vmlogrdr.c +++ b/drivers/s390/char/vmlogrdr.c @@ -762,10 +762,10 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) device_unregister(dev); return ret; } - priv->class_device = device_create(vmlogrdr_class, dev, - MKDEV(vmlogrdr_major, - priv->minor_num), - "%s", dev->bus_id); + priv->class_device = device_create_drvdata(vmlogrdr_class, dev, + MKDEV(vmlogrdr_major, + priv->minor_num), + priv, "%s", dev->bus_id); if (IS_ERR(priv->class_device)) { ret = PTR_ERR(priv->class_device); priv->class_device=NULL; @@ -773,7 +773,6 @@ static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) device_unregister(dev); return ret; } - dev->driver_data = priv; priv->device = dev; return 0; } -- cgit v1.2.3 From b769f579081943f14e0ff03b7b0bd3a11cf14625 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Fri, 30 May 2008 15:09:42 -0500 Subject: virtio: set device index in common code. Anthony Liguori points out that three different transports use the virtio code, but each one keeps its own counter to set the virtio_device's index field. In theory (though not in current practice) this means that names could be duplicated, and that risk grows as more transports are created. So we move the selection of the unique virtio_device.index into the common code in virtio.c, which has the side-benefit of removing duplicate code. The only complexity is that lguest and S/390 use the index to uniquely identify the device in case of catastrophic failure before register_virtio_device() is called: now we use the offset within the descriptor page as a unique identifier for the printks. Signed-off-by: Rusty Russell Cc: Christian Borntraeger Cc: Martin Schwidefsky Cc: Carsten Otte Cc: Heiko Carstens Cc: Chris Lalancette Cc: Anthony Liguori --- drivers/lguest/lguest_device.c | 23 +++++++++-------------- drivers/s390/kvm/kvm_virtio.c | 18 ++++++------------ drivers/virtio/virtio.c | 6 ++++++ drivers/virtio/virtio_pci.c | 6 ------ 4 files changed, 21 insertions(+), 32 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c index f4fdf351a7c7..1a8de57289eb 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -20,9 +20,6 @@ /* The pointer to our (page) of device descriptions. */ static void *lguest_devices; -/* Unique numbering for lguest devices. */ -static unsigned int dev_index; - /* For Guests, device memory can be used as normal memory, so we cast away the * __iomem to quieten sparse. */ static inline void *lguest_map(unsigned long phys_addr, unsigned long pages) @@ -325,8 +322,10 @@ static struct device lguest_root = { * As Andrew Tridgell says, "Untested code is buggy code". * * It's worth reading this carefully: we start with a pointer to the new device - * descriptor in the "lguest_devices" page. */ -static void add_lguest_device(struct lguest_device_desc *d) + * descriptor in the "lguest_devices" page, and the offset into the device + * descriptor page so we can uniquely identify it if things go badly wrong. */ +static void add_lguest_device(struct lguest_device_desc *d, + unsigned int offset) { struct lguest_device *ldev; @@ -334,18 +333,14 @@ static void add_lguest_device(struct lguest_device_desc *d) * it. */ ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); if (!ldev) { - printk(KERN_EMERG "Cannot allocate lguest dev %u\n", - dev_index++); + printk(KERN_EMERG "Cannot allocate lguest dev %u type %u\n", + offset, d->type); return; } /* This devices' parent is the lguest/ dir. */ ldev->vdev.dev.parent = &lguest_root; /* We have a unique device index thanks to the dev_index counter. */ - ldev->vdev.index = dev_index++; - /* The device type comes straight from the descriptor. There's also a - * device vendor field in the virtio_device struct, which we leave as - * 0. */ ldev->vdev.id.device = d->type; /* We have a simple set of routines for querying the device's * configuration information and setting its status. */ @@ -357,8 +352,8 @@ static void add_lguest_device(struct lguest_device_desc *d) * virtio_device and calls device_register(). This makes the bus * infrastructure look for a matching driver. */ if (register_virtio_device(&ldev->vdev) != 0) { - printk(KERN_ERR "Failed to register lguest device %u\n", - ldev->vdev.index); + printk(KERN_ERR "Failed to register lguest dev %u type %u\n", + offset, d->type); kfree(ldev); } } @@ -379,7 +374,7 @@ static void scan_devices(void) break; printk("Device at %i has size %u\n", i, desc_size(d)); - add_lguest_device(d); + add_lguest_device(d, i); } } diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index 9f55ce6f3c78..5ab34340919b 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -31,11 +31,6 @@ */ static void *kvm_devices; -/* - * Unique numbering for kvm devices. - */ -static unsigned int dev_index; - struct kvm_device { struct virtio_device vdev; struct kvm_device_desc *desc; @@ -250,26 +245,25 @@ static struct device kvm_root = { * adds a new device and register it with virtio * appropriate drivers are loaded by the device model */ -static void add_kvm_device(struct kvm_device_desc *d) +static void add_kvm_device(struct kvm_device_desc *d, unsigned int offset) { struct kvm_device *kdev; kdev = kzalloc(sizeof(*kdev), GFP_KERNEL); if (!kdev) { - printk(KERN_EMERG "Cannot allocate kvm dev %u\n", - dev_index++); + printk(KERN_EMERG "Cannot allocate kvm dev %u type %u\n", + offset, d->type); return; } kdev->vdev.dev.parent = &kvm_root; - kdev->vdev.index = dev_index++; kdev->vdev.id.device = d->type; kdev->vdev.config = &kvm_vq_configspace_ops; kdev->desc = d; if (register_virtio_device(&kdev->vdev) != 0) { - printk(KERN_ERR "Failed to register kvm device %u\n", - kdev->vdev.index); + printk(KERN_ERR "Failed to register kvm device %u type %u\n", + offset, d->type); kfree(kdev); } } @@ -289,7 +283,7 @@ static void scan_devices(void) if (d->type == 0) break; - add_kvm_device(d); + add_kvm_device(d, i); } } diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 59918dfc3cb7..0f3c2bb7bf35 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -2,6 +2,9 @@ #include #include +/* Unique numbering for virtio devices. */ +static unsigned int dev_index; + static ssize_t device_show(struct device *_d, struct device_attribute *attr, char *buf) { @@ -166,6 +169,9 @@ int register_virtio_device(struct virtio_device *dev) int err; dev->dev.bus = &virtio_bus; + + /* Assign a unique device index and hence name. */ + dev->index = dev_index++; sprintf(dev->dev.bus_id, "virtio%u", dev->index); /* We always start by resetting the device, in case a previous diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c index 2913c2f309f0..eae7236310e4 100644 --- a/drivers/virtio/virtio_pci.c +++ b/drivers/virtio/virtio_pci.c @@ -78,9 +78,6 @@ static struct device virtio_pci_root = { .bus_id = "virtio-pci", }; -/* Unique numbering for devices under the kvm root */ -static unsigned int dev_index; - /* Convert a generic virtio device to our structure */ static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev) { @@ -325,9 +322,6 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev, if (vp_dev == NULL) return -ENOMEM; - vp_dev->vdev.index = dev_index; - dev_index++; - vp_dev->vdev.dev.parent = &virtio_pci_root; vp_dev->vdev.config = &virtio_pci_config_ops; vp_dev->pci_dev = pci_dev; -- cgit v1.2.3 From f71ad62a264a89cb1952df0c92b167005de8d1b0 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Fri, 30 May 2008 10:03:25 +0200 Subject: [S390] tape: Fix race condition in tape block device driver Due to incorrect function call sequence it can happen that a tape block request is finished before the request is taken from the block request queue. The following sequence leads to that condition: * tapeblock_start_request() -> start CCW program * Request finishes -> IO interrupt * tapeblock_end_request() * end_that_request_last() If blkdev_dequeue_request() has not been called before end_that_request_last(), a kernel bug is triggered in end_that_request_last() because the request is still queued. To solve that problem blkdev_dequeue_request() has to be called before starting the CCW program. Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- drivers/s390/char/tape_block.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c index ddc4a114e7f4..95da72bc17e8 100644 --- a/drivers/s390/char/tape_block.c +++ b/drivers/s390/char/tape_block.c @@ -179,11 +179,11 @@ tapeblock_requeue(struct work_struct *work) { tapeblock_end_request(req, -EIO); continue; } + blkdev_dequeue_request(req); + nr_queued++; spin_unlock_irq(&device->blk_data.request_queue_lock); rc = tapeblock_start_request(device, req); spin_lock_irq(&device->blk_data.request_queue_lock); - blkdev_dequeue_request(req); - nr_queued++; } spin_unlock_irq(&device->blk_data.request_queue_lock); atomic_set(&device->blk_data.requeue_scheduled, 0); -- cgit v1.2.3 From 67060d9c1f5d91c917cc51bed464cb5638eaddbc Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Fri, 30 May 2008 10:03:27 +0200 Subject: [S390] Fix section mismatch warnings. This fixes the last remaining section mismatch warnings in s390 architecture code. It reveals also a real bug introduced by... me with git commit 2069e978d5a6e7b45d58027e3de7f879b8c5e488 ("[S390] sparsemem vmemmap: initialize memmap.") Calling the generic vmemmap_alloc_block() function to get initialized memory is a nice idea, however that function is __meminit annotated and therefore the function might be gone if we try to call it later. This can happen if a DCSS segment gets added. So basically revert the patch and clear the memmap explicitly to fix the original bug. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/smp.c | 2 +- arch/s390/mm/vmem.c | 18 +++++++++++++----- drivers/s390/char/sclp_config.c | 2 +- 3 files changed, 15 insertions(+), 7 deletions(-) (limited to 'drivers/s390') diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 1f4228948dc4..42b1d12ebb10 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -1089,7 +1089,7 @@ out: #ifdef CONFIG_HOTPLUG_CPU -int smp_rescan_cpus(void) +int __ref smp_rescan_cpus(void) { cpumask_t newcpus; int cpu; diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index ea2804808f39..f591188fa2c0 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -27,12 +27,19 @@ struct memory_segment { static LIST_HEAD(mem_segs); -static pud_t *vmem_pud_alloc(void) +static void __ref *vmem_alloc_pages(unsigned int order) +{ + if (slab_is_available()) + return (void *)__get_free_pages(GFP_KERNEL, order); + return alloc_bootmem_pages((1 << order) * PAGE_SIZE); +} + +static inline pud_t *vmem_pud_alloc(void) { pud_t *pud = NULL; #ifdef CONFIG_64BIT - pud = vmemmap_alloc_block(PAGE_SIZE * 4, 0); + pud = vmem_alloc_pages(2); if (!pud) return NULL; clear_table((unsigned long *) pud, _REGION3_ENTRY_EMPTY, PAGE_SIZE * 4); @@ -40,12 +47,12 @@ static pud_t *vmem_pud_alloc(void) return pud; } -static pmd_t *vmem_pmd_alloc(void) +static inline pmd_t *vmem_pmd_alloc(void) { pmd_t *pmd = NULL; #ifdef CONFIG_64BIT - pmd = vmemmap_alloc_block(PAGE_SIZE * 4, 0); + pmd = vmem_alloc_pages(2); if (!pmd) return NULL; clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE * 4); @@ -207,13 +214,14 @@ int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node) if (pte_none(*pt_dir)) { unsigned long new_page; - new_page =__pa(vmemmap_alloc_block(PAGE_SIZE, 0)); + new_page =__pa(vmem_alloc_pages(0)); if (!new_page) goto out; pte = pfn_pte(new_page >> PAGE_SHIFT, PAGE_KERNEL); *pt_dir = pte; } } + memset(start, 0, nr * sizeof(struct page)); ret = 0; out: flush_tlb_kernel_range(start_addr, end_addr); diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c index 9e784d5f7f57..ad05a87bc480 100644 --- a/drivers/s390/char/sclp_config.c +++ b/drivers/s390/char/sclp_config.c @@ -40,7 +40,7 @@ static void sclp_cpu_capability_notify(struct work_struct *work) put_online_cpus(); } -static void sclp_cpu_change_notify(struct work_struct *work) +static void __ref sclp_cpu_change_notify(struct work_struct *work) { smp_rescan_cpus(); } -- cgit v1.2.3 From d4820e44b0ae6830b1d634e6d0a425d839388c06 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Fri, 30 May 2008 10:03:30 +0200 Subject: [S390] sclp_vt220: fix scheduling while atomic bug. The driver incorrectly assumed that putchar will only be called from schedulable process context and therefore blocked and waited if no free output buffers where available. Since putchar may also be called from BH context this may lead to deadlocks. To fix this just return the number of characters accepted and let the upper layer handle the rest. The console write function will busy wait (sclp_sync_wait) until a buffer is available again. Cc: Peter Oberparleiter Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- drivers/s390/char/sclp_vt220.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index 35707c04e613..62576af36f47 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -71,9 +71,6 @@ static struct list_head sclp_vt220_outqueue; /* Number of requests in outqueue */ static int sclp_vt220_outqueue_count; -/* Wait queue used to delay write requests while we've run out of buffers */ -static wait_queue_head_t sclp_vt220_waitq; - /* Timer used for delaying write requests to merge subsequent messages into * a single buffer */ static struct timer_list sclp_vt220_timer; @@ -133,7 +130,6 @@ sclp_vt220_process_queue(struct sclp_vt220_request *request) } while (request && __sclp_vt220_emit(request)); if (request == NULL && sclp_vt220_flush_later) sclp_vt220_emit_current(); - wake_up(&sclp_vt220_waitq); /* Check if the tty needs a wake up call */ if (sclp_vt220_tty != NULL) { tty_wakeup(sclp_vt220_tty); @@ -383,7 +379,7 @@ sclp_vt220_timeout(unsigned long data) */ static int __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule, - int convertlf, int may_schedule) + int convertlf, int may_fail) { unsigned long flags; void *page; @@ -395,15 +391,14 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule, overall_written = 0; spin_lock_irqsave(&sclp_vt220_lock, flags); do { - /* Create a sclp output buffer if none exists yet */ + /* Create an sclp output buffer if none exists yet */ if (sclp_vt220_current_request == NULL) { while (list_empty(&sclp_vt220_empty)) { spin_unlock_irqrestore(&sclp_vt220_lock, flags); - if (in_interrupt() || !may_schedule) - sclp_sync_wait(); + if (may_fail) + goto out; else - wait_event(sclp_vt220_waitq, - !list_empty(&sclp_vt220_empty)); + sclp_sync_wait(); spin_lock_irqsave(&sclp_vt220_lock, flags); } page = (void *) sclp_vt220_empty.next; @@ -437,6 +432,7 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule, add_timer(&sclp_vt220_timer); } spin_unlock_irqrestore(&sclp_vt220_lock, flags); +out: return overall_written; } @@ -520,19 +516,11 @@ sclp_vt220_close(struct tty_struct *tty, struct file *filp) * character to the tty device. If the kernel uses this routine, * it must call the flush_chars() routine (if defined) when it is * done stuffing characters into the driver. - * - * NOTE: include/linux/tty_driver.h specifies that a character should be - * ignored if there is no room in the queue. This driver implements a different - * semantic in that it will block when there is no more room left. - * - * FIXME: putchar can currently be called from BH and other non blocking - * handlers so this semantic isn't a good idea. */ static int sclp_vt220_put_char(struct tty_struct *tty, unsigned char ch) { - __sclp_vt220_write(&ch, 1, 0, 0, 1); - return 1; + return __sclp_vt220_write(&ch, 1, 0, 0, 1); } /* @@ -653,7 +641,6 @@ static int __init __sclp_vt220_init(void) spin_lock_init(&sclp_vt220_lock); INIT_LIST_HEAD(&sclp_vt220_empty); INIT_LIST_HEAD(&sclp_vt220_outqueue); - init_waitqueue_head(&sclp_vt220_waitq); init_timer(&sclp_vt220_timer); sclp_vt220_current_request = NULL; sclp_vt220_buffered_chars = 0; -- cgit v1.2.3 From c80ee724966a8ce9a68020d9095233fb1c6f57e8 Mon Sep 17 00:00:00 2001 From: Stefan Haberland Date: Fri, 30 May 2008 10:03:31 +0200 Subject: [S390] dasd: use a generic wait_queue for sleep_on Use a generic wait_queue to prevent the wait_queue in dasd_sleep_on_ functions from being referenced by callback_data while it does not exist any more. Signed-off-by: Stefan Haberland Signed-off-by: Martin Schwidefsky --- drivers/s390/block/dasd.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 8ba3f135da22..1a4025683362 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -63,6 +63,7 @@ static void dasd_return_cqr_cb(struct dasd_ccw_req *, void *); */ static wait_queue_head_t dasd_init_waitq; static wait_queue_head_t dasd_flush_wq; +static wait_queue_head_t generic_waitq; /* * Allocate memory for a new device structure. @@ -1151,11 +1152,15 @@ static void __dasd_device_process_final_queue(struct dasd_device *device, struct list_head *l, *n; struct dasd_ccw_req *cqr; struct dasd_block *block; + void (*callback)(struct dasd_ccw_req *, void *data); + void *callback_data; list_for_each_safe(l, n, final_queue) { cqr = list_entry(l, struct dasd_ccw_req, devlist); list_del_init(&cqr->devlist); block = cqr->block; + callback = cqr->callback; + callback_data = cqr->callback_data; if (block) spin_lock_bh(&block->queue_lock); switch (cqr->status) { @@ -1176,7 +1181,7 @@ static void __dasd_device_process_final_queue(struct dasd_device *device, BUG(); } if (cqr->callback != NULL) - (cqr->callback)(cqr, cqr->callback_data); + (callback)(cqr, callback_data); if (block) spin_unlock_bh(&block->queue_lock); } @@ -1406,17 +1411,15 @@ static inline int _wait_for_wakeup(struct dasd_ccw_req *cqr) */ int dasd_sleep_on(struct dasd_ccw_req *cqr) { - wait_queue_head_t wait_q; struct dasd_device *device; int rc; device = cqr->startdev; - init_waitqueue_head (&wait_q); cqr->callback = dasd_wakeup_cb; - cqr->callback_data = (void *) &wait_q; + cqr->callback_data = (void *) &generic_waitq; dasd_add_request_tail(cqr); - wait_event(wait_q, _wait_for_wakeup(cqr)); + wait_event(generic_waitq, _wait_for_wakeup(cqr)); /* Request status is either done or failed. */ rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO; @@ -1429,20 +1432,18 @@ int dasd_sleep_on(struct dasd_ccw_req *cqr) */ int dasd_sleep_on_interruptible(struct dasd_ccw_req *cqr) { - wait_queue_head_t wait_q; struct dasd_device *device; int rc; device = cqr->startdev; - init_waitqueue_head (&wait_q); cqr->callback = dasd_wakeup_cb; - cqr->callback_data = (void *) &wait_q; + cqr->callback_data = (void *) &generic_waitq; dasd_add_request_tail(cqr); - rc = wait_event_interruptible(wait_q, _wait_for_wakeup(cqr)); + rc = wait_event_interruptible(generic_waitq, _wait_for_wakeup(cqr)); if (rc == -ERESTARTSYS) { dasd_cancel_req(cqr); /* wait (non-interruptible) for final status */ - wait_event(wait_q, _wait_for_wakeup(cqr)); + wait_event(generic_waitq, _wait_for_wakeup(cqr)); } rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO; return rc; @@ -1466,7 +1467,6 @@ static inline int _dasd_term_running_cqr(struct dasd_device *device) int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr) { - wait_queue_head_t wait_q; struct dasd_device *device; int rc; @@ -1478,9 +1478,8 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr) return rc; } - init_waitqueue_head (&wait_q); cqr->callback = dasd_wakeup_cb; - cqr->callback_data = (void *) &wait_q; + cqr->callback_data = (void *) &generic_waitq; cqr->status = DASD_CQR_QUEUED; list_add(&cqr->devlist, &device->ccw_queue); @@ -1489,7 +1488,7 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr) spin_unlock_irq(get_ccwdev_lock(device->cdev)); - wait_event(wait_q, _wait_for_wakeup(cqr)); + wait_event(generic_waitq, _wait_for_wakeup(cqr)); /* Request status is either done or failed. */ rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO; @@ -2430,6 +2429,7 @@ static int __init dasd_init(void) init_waitqueue_head(&dasd_init_waitq); init_waitqueue_head(&dasd_flush_wq); + init_waitqueue_head(&generic_waitq); /* register 'common' DASD debug area, used for all DBF_XXX calls */ dasd_debug_area = debug_register("dasd", 1, 1, 8 * sizeof(long)); -- cgit v1.2.3 From 54ad64129cc166b9eec7151f3f9fc83589e33555 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 30 May 2008 10:03:32 +0200 Subject: [S390] 3270: fix race with stack local wait_queue_head_t. A wait_event call with a stack local wait_queue_head_t structure that is used to do the wake up for the wait_event is inherently racy. After the wait_event finished the wake_up call might not have completed yet. Remove the stack local wait_queue_head_t from raw3270_start_init and use the global raw3270_wait_queue instead. Signed-off-by: Martin Schwidefsky --- drivers/s390/char/raw3270.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index 0d98f1ff2edd..848ef7e8523f 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -549,7 +549,6 @@ raw3270_start_init(struct raw3270 *rp, struct raw3270_view *view, struct raw3270_request *rq) { unsigned long flags; - wait_queue_head_t wq; int rc; #ifdef CONFIG_TN3270_CONSOLE @@ -566,20 +565,20 @@ raw3270_start_init(struct raw3270 *rp, struct raw3270_view *view, return rq->rc; } #endif - init_waitqueue_head(&wq); rq->callback = raw3270_wake_init; - rq->callback_data = &wq; + rq->callback_data = &raw3270_wait_queue; spin_lock_irqsave(get_ccwdev_lock(view->dev->cdev), flags); rc = __raw3270_start(rp, view, rq); spin_unlock_irqrestore(get_ccwdev_lock(view->dev->cdev), flags); if (rc) return rc; /* Now wait for the completion. */ - rc = wait_event_interruptible(wq, raw3270_request_final(rq)); + rc = wait_event_interruptible(raw3270_wait_queue, + raw3270_request_final(rq)); if (rc == -ERESTARTSYS) { /* Interrupted by a signal. */ raw3270_halt_io(view->dev, rq); /* No wait for the halt to complete. */ - wait_event(wq, raw3270_request_final(rq)); + wait_event(raw3270_wait_queue, raw3270_request_final(rq)); return -ERESTARTSYS; } return rq->rc; -- cgit v1.2.3 From 4657fb8a98a4e02981a574492bbe470c147b6657 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 30 May 2008 10:03:33 +0200 Subject: [S390] tape: fix race with stack local wait_queue_head_t. A wait_event call with a stack local wait_queue_head_t structure that is used to do the wake up for the wait_event is inherently racy. After the wait_event finished the wake_up call might not have completed yet. Replace the stack local wait_queue_head_t in tape_do_io and tape_do_io_interruptible with a per device wait queue. Signed-off-by: Martin Schwidefsky --- drivers/s390/char/tape.h | 3 +++ drivers/s390/char/tape_core.c | 16 +++++++--------- 2 files changed, 10 insertions(+), 9 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/char/tape.h b/drivers/s390/char/tape.h index dddf8d62c153..d0d565a05dfe 100644 --- a/drivers/s390/char/tape.h +++ b/drivers/s390/char/tape.h @@ -231,6 +231,9 @@ struct tape_device { /* Request queue. */ struct list_head req_queue; + /* Request wait queue. */ + wait_queue_head_t wait_queue; + /* Each tape device has (currently) two minor numbers. */ int first_minor; diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c index 76e44eb7c47f..c20e3c548343 100644 --- a/drivers/s390/char/tape_core.c +++ b/drivers/s390/char/tape_core.c @@ -449,6 +449,7 @@ tape_alloc_device(void) INIT_LIST_HEAD(&device->req_queue); INIT_LIST_HEAD(&device->node); init_waitqueue_head(&device->state_change_wq); + init_waitqueue_head(&device->wait_queue); device->tape_state = TS_INIT; device->medium_state = MS_UNKNOWN; *device->modeset_byte = 0; @@ -954,21 +955,19 @@ __tape_wake_up(struct tape_request *request, void *data) int tape_do_io(struct tape_device *device, struct tape_request *request) { - wait_queue_head_t wq; int rc; - init_waitqueue_head(&wq); spin_lock_irq(get_ccwdev_lock(device->cdev)); /* Setup callback */ request->callback = __tape_wake_up; - request->callback_data = &wq; + request->callback_data = &device->wait_queue; /* Add request to request queue and try to start it. */ rc = __tape_start_request(device, request); spin_unlock_irq(get_ccwdev_lock(device->cdev)); if (rc) return rc; /* Request added to the queue. Wait for its completion. */ - wait_event(wq, (request->callback == NULL)); + wait_event(device->wait_queue, (request->callback == NULL)); /* Get rc from request */ return request->rc; } @@ -989,20 +988,19 @@ int tape_do_io_interruptible(struct tape_device *device, struct tape_request *request) { - wait_queue_head_t wq; int rc; - init_waitqueue_head(&wq); spin_lock_irq(get_ccwdev_lock(device->cdev)); /* Setup callback */ request->callback = __tape_wake_up_interruptible; - request->callback_data = &wq; + request->callback_data = &device->wait_queue; rc = __tape_start_request(device, request); spin_unlock_irq(get_ccwdev_lock(device->cdev)); if (rc) return rc; /* Request added to the queue. Wait for its completion. */ - rc = wait_event_interruptible(wq, (request->callback == NULL)); + rc = wait_event_interruptible(device->wait_queue, + (request->callback == NULL)); if (rc != -ERESTARTSYS) /* Request finished normally. */ return request->rc; @@ -1015,7 +1013,7 @@ tape_do_io_interruptible(struct tape_device *device, /* Wait for the interrupt that acknowledges the halt. */ do { rc = wait_event_interruptible( - wq, + device->wait_queue, (request->callback == NULL) ); } while (rc == -ERESTARTSYS); -- cgit v1.2.3 From 71cde5879f10b639506bc0b9f29a89f58b42a17e Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Wed, 21 May 2008 13:37:34 +0200 Subject: KVM: s390: handle machine checks when guest is running The low-level interrupt handler on s390 checks for _TIF_WORK_INT and exits the guest context, if work is pending. TIF_WORK_INT is defined as_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING. Currently the sie loop checks for signals and reschedule, but it does not check for machine checks. That means that we exit the guest context if a machine check is pending, but we do not handle the machine check. Signed-off-by: Christian Borntraeger CC: Heiko Carstens Signed-off-by: Carsten Otte Signed-off-by: Avi Kivity --- arch/s390/kvm/kvm-s390.c | 5 +++++ drivers/s390/s390mach.c | 1 + 2 files changed, 6 insertions(+) (limited to 'drivers/s390') diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 0ac36a649eba..40e4f2de7320 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -423,6 +423,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, return -EINVAL; /* not implemented yet */ } +extern void s390_handle_mcck(void); + static void __vcpu_run(struct kvm_vcpu *vcpu) { memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16); @@ -430,6 +432,9 @@ static void __vcpu_run(struct kvm_vcpu *vcpu) if (need_resched()) schedule(); + if (test_thread_flag(TIF_MCCK_PENDING)) + s390_handle_mcck(); + vcpu->arch.sie_block->icptcode = 0; local_irq_disable(); kvm_guest_enter(); diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c index 5080f343ad74..5bfbe7659830 100644 --- a/drivers/s390/s390mach.c +++ b/drivers/s390/s390mach.c @@ -207,6 +207,7 @@ s390_handle_mcck(void) do_exit(SIGSEGV); } } +EXPORT_SYMBOL_GPL(s390_handle_mcck); /* * returns 0 if all registers could be validated -- cgit v1.2.3 From 12829126aa47758608578cc5be3a5adffc3d4b09 Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Tue, 10 Jun 2008 10:03:19 +0200 Subject: [S390] cio: Fix sparse warnings in blacklist.c. sparse complains about signedness: drivers/s390/cio/blacklist.c:132:28: warning: incorrect type in argument 2 (different signedness) drivers/s390/cio/blacklist.c:132:28: expected unsigned int *val drivers/s390/cio/blacklist.c:132:28: got int *cssid drivers/s390/cio/blacklist.c:136:28: warning: incorrect type in argument 2 (different signedness) drivers/s390/cio/blacklist.c:136:28: expected unsigned int *val drivers/s390/cio/blacklist.c:136:28: got int *ssid drivers/s390/cio/blacklist.c:140:28: warning: incorrect type in argument 2 (different signedness) drivers/s390/cio/blacklist.c:140:28: expected unsigned int *val drivers/s390/cio/blacklist.c:140:28: got int *devno cssid, ssid and devno are of course unsigned, so let's make the variables unsigned as well. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/blacklist.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c index a4a5f2efea48..0bfcbbe375c4 100644 --- a/drivers/s390/cio/blacklist.c +++ b/drivers/s390/cio/blacklist.c @@ -97,8 +97,8 @@ static int pure_hex(char **cp, unsigned int *val, int min_digit, return 0; } -static int parse_busid(char *str, int *cssid, int *ssid, int *devno, - int msgtrigger) +static int parse_busid(char *str, unsigned int *cssid, unsigned int *ssid, + unsigned int *devno, int msgtrigger) { char *str_work; int val, rc, ret; @@ -148,7 +148,7 @@ out: static int blacklist_parse_parameters(char *str, range_action action, int msgtrigger) { - int from_cssid, to_cssid, from_ssid, to_ssid, from, to; + unsigned int from_cssid, to_cssid, from_ssid, to_ssid, from, to; int rc, totalrc; char *parm; range_action ra; -- cgit v1.2.3 From 85b0d7c0ad92c47887bf6aeb424a14e7af14bd87 Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Tue, 10 Jun 2008 10:03:21 +0200 Subject: [S390] cio: Fix inverted isc priorities. Priorities for I/O interruption subclasses range from 0 (highest) to 7 (lowest). Unfortunately, the console has been using isc 7 instead of an isc with a higher priority than regular I/O subchannels (which use 3). Fix this by making the console use isc 1. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/cio.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 82c6a2d45128..b32d7eb3d81a 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -576,12 +576,14 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid) err = -ENODEV; goto out; } - if (cio_is_console(sch->schid)) + if (cio_is_console(sch->schid)) { sch->opm = 0xff; - else + sch->isc = 1; + } else { sch->opm = chp_get_sch_opm(sch); + sch->isc = 3; + } sch->lpm = sch->schib.pmcw.pam & sch->opm; - sch->isc = 3; CIO_MSG_EVENT(6, "Detected device %04x on subchannel 0.%x.%04X " "- PIM = %02X, PAM = %02X, POM = %02X\n", @@ -704,9 +706,9 @@ void wait_cons_dev(void) if (!console_subchannel_in_use) return; - /* disable all but isc 7 (console device) */ + /* disable all but isc 1 (console device) */ __ctl_store (save_cr6, 6, 6); - cr6 = 0x01000000; + cr6 = 0x40000000; __ctl_load (cr6, 6, 6); do { @@ -788,11 +790,11 @@ cio_probe_console(void) } /* - * enable console I/O-interrupt subclass 7 + * enable console I/O-interrupt subclass 1 */ - ctl_set_bit(6, 24); - console_subchannel.isc = 7; - console_subchannel.schib.pmcw.isc = 7; + ctl_set_bit(6, 30); + console_subchannel.isc = 1; + console_subchannel.schib.pmcw.isc = 1; console_subchannel.schib.pmcw.intparm = (u32)(addr_t)&console_subchannel; ret = cio_modify(&console_subchannel); -- cgit v1.2.3 From 7b439d25300dc59bba76b53eb344bb9e5a1133f2 Mon Sep 17 00:00:00 2001 From: Carsten Otte Date: Tue, 10 Jun 2008 10:03:22 +0200 Subject: [S390] vt220 console, initialize list head before use This patch fixes a null pointer dereference during initialisation when no sclp event facility is available: sclp vt220 tty driver: could not register vt220 - sclp_register returned -5 Unable to handle kernel paging request at virtual user address 0000000000000000 Oops: 0004 [#1] PREEMPT SMP Modules linked in: CPU: 0 Not tainted 2.6.26-rc3-kvm-bigiron-00968-gd939e93-dirty #30 Process swapper (pid: 0, task: 0000000000600be0, ksp: 000000000064a000) Krnl PSW : 0400000180000000 0000000000320d8c (sclp_unregister+0x48/0x8c) R:0 T:1 IO:0 EX:0 Key:0 M:0 W:0 P:0 AS:0 CC:0 PM:0 EA:3 Krnl GPRS: 0000000000000000 0000000000000000 0000000000630478 0700000000649c20 0000000000000000 0000000000433060 000000000064a660 0000000002e26000 00000000006db000 0000000000000000 0000000000a78578 0000000000649b80 0000000000630dc0 000000000044fa20 0000000000320d76 0000000000649b80 Krnl Code: 0000000000320d7c: e310c0080004 lg %r1,8(%r12) 0000000000320d82: b9040032 lgr %r3,%r2 0000000000320d86: c02000187b79 larl %r2,630478 >0000000000320d8c: e34010000024 stg %r4,0(%r1) 0000000000320d92: e31040080024 stg %r1,8(%r4) 0000000000320d98: c01100200200 lgfi %r1,2097664 0000000000320d9e: e310c0080024 stg %r1,8(%r12) 0000000000320da4: c01100100100 lgfi %r1,1048832 Call Trace: ([<0000000000320d76>] sclp_unregister+0x32/0x8c) [<00000000006657b4>] __sclp_vt220_cleanup+0xc4/0xe0 [<000000000066595c>] __sclp_vt220_init+0x18c/0x1a0 [<0000000000665aba>] sclp_vt220_con_init+0x42/0x68 [<00000000006601ca>] console_init+0x4e/0x68 [<000000000064acae>] start_kernel+0x3a2/0x4dc [<0000000000100020>] _stext+0x20/0x80 INFO: lockdep is turned off. Last Breaking-Event-Address: [<000000000041f964>] _spin_lock_irqsave+0xb0/0xb4 <4>---[ end trace 31fd0ba7d8756001 ]--- The issue is caused by a list_empty() check in __sclp_vt220_cleanup, which usually fails on non-initialized list heads that contain {NULL,NULL} instead. Signed-off-by: Carsten Otte Signed-off-by: Martin Schwidefsky --- drivers/s390/char/sclp_vt220.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/s390') diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index 62576af36f47..3e577f655b18 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -773,6 +773,7 @@ sclp_vt220_con_init(void) { int rc; + INIT_LIST_HEAD(&sclp_vt220_register.list); if (!CONSOLE_IS_SCLP) return 0; rc = __sclp_vt220_init(); -- cgit v1.2.3 From 1783e60ff207805a3e75cf522b17ec9bb1604a62 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 10 Jun 2008 10:03:25 +0200 Subject: [S390] tape_3590.c: introduce missing kfree The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) @r exists@ expression E,E1; statement S; position p1,p2,p3; @@ E =@p1 \(kmalloc\|kcalloc\|kzalloc\)(...) ... when != E = E1 if (E == NULL || ...) S ... when != E = E1 if@p2 (...) { ... when != kfree(E) } ... when != E = E1 kfree@p3(E); @forall@ position r.p2; expression r.E; int E1 != 0; @@ * if@p2 (...) { ... when != kfree(E) when strict return E1; } Signed-off-by: Julia Lawall Signed-off-by: Martin Schwidefsky --- drivers/s390/char/tape_3590.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/s390') diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c index 8246ef3ab095..42ce7915fc5d 100644 --- a/drivers/s390/char/tape_3590.c +++ b/drivers/s390/char/tape_3590.c @@ -1598,7 +1598,7 @@ tape_3590_setup_device(struct tape_device *device) rc = tape_3590_read_dev_chars(device, rdc_data); if (rc) { DBF_LH(3, "Read device characteristics failed!\n"); - goto fail_kmalloc; + goto fail_rdc_data; } rc = tape_std_assign(device); if (rc) -- cgit v1.2.3 From e5bd7be56787f8c5042081157fff983bcf0c8a42 Mon Sep 17 00:00:00 2001 From: Frank Blaschka Date: Fri, 6 Jun 2008 12:37:44 +0200 Subject: qeth: layer 3 Oops in ip event handler The ip event handler may present us non qeth network interfaces. Add qeth card pointer check. Signed-off-by: Frank Blaschka Signed-off-by: Jeff Garzik --- drivers/s390/net/qeth_l3_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/s390') diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 94a8ead64ed4..b041ea8c9577 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2070,7 +2070,7 @@ static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) card = netdev_priv(dev); else if (rc == QETH_VLAN_CARD) card = netdev_priv(vlan_dev_info(dev)->real_dev); - if (card->options.layer2) + if (card && card->options.layer2) card = NULL; QETH_DBF_TEXT_(TRACE, 4, "%d", rc); return card ; -- cgit v1.2.3 From f06f6f3224afdd7e58207d1f5950f4666c5f095f Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Fri, 6 Jun 2008 12:37:45 +0200 Subject: qeth: Use ccw_device_get_id(). Get the devno from the ccw device via ccw_device_get_id() instead of parsing the bus_id. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky Signed-off-by: Frank Blaschka Signed-off-by: Jeff Garzik --- drivers/s390/net/qeth_core_main.c | 11 +++-------- drivers/s390/net/qeth_l2_main.c | 11 ++++------- 2 files changed, 7 insertions(+), 15 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 436bf1f6d4a6..5a71ae909366 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -1407,12 +1407,6 @@ static void qeth_init_func_level(struct qeth_card *card) } } -static inline __u16 qeth_raw_devno_from_bus_id(char *id) -{ - id += (strlen(id) - 4); - return (__u16) simple_strtoul(id, &id, 16); -} - static int qeth_idx_activate_get_answer(struct qeth_channel *channel, void (*idx_reply_cb)(struct qeth_channel *, struct qeth_cmd_buffer *)) @@ -1468,6 +1462,7 @@ static int qeth_idx_activate_channel(struct qeth_channel *channel, __u16 temp; __u8 tmp; int rc; + struct ccw_dev_id temp_devid; card = CARD_FROM_CDEV(channel->ccwdev); @@ -1494,8 +1489,8 @@ static int qeth_idx_activate_channel(struct qeth_channel *channel, &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), &card->info.func_level, sizeof(__u16)); - temp = qeth_raw_devno_from_bus_id(CARD_DDEV_ID(card)); - memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 2); + ccw_device_get_id(CARD_DDEV(card), &temp_devid); + memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); temp = (card->info.cula << 8) + card->info.unit_addr2; memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 86ec50ddae13..d35a74c3b475 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -101,19 +101,16 @@ static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) { struct qeth_card *card; struct net_device *ndev; - unsigned char *readno; - __u16 temp_dev_no, card_dev_no; - char *endp; + __u16 temp_dev_no; unsigned long flags; + struct ccw_dev_id read_devid; ndev = NULL; memcpy(&temp_dev_no, read_dev_no, 2); read_lock_irqsave(&qeth_core_card_list.rwlock, flags); list_for_each_entry(card, &qeth_core_card_list.list, list) { - readno = CARD_RDEV_ID(card); - readno += (strlen(readno) - 4); - card_dev_no = simple_strtoul(readno, &endp, 16); - if (card_dev_no == temp_dev_no) { + ccw_device_get_id(CARD_RDEV(card), &read_devid); + if (read_devid.devno == temp_dev_no) { ndev = card->dev; break; } -- cgit v1.2.3 From 14cc21b6770972e5d1487dbf3a2caaf63cae909a Mon Sep 17 00:00:00 2001 From: Frank Blaschka Date: Fri, 6 Jun 2008 12:37:46 +0200 Subject: qeth: reduce number of kernel messages Remove unnecessary messages. Write important debug information to s390dbf. Signed-off-by: Frank Blaschka Signed-off-by: Jeff Garzik --- drivers/s390/net/qeth_core_main.c | 30 ++++------------ drivers/s390/net/qeth_core_offl.c | 6 ++-- drivers/s390/net/qeth_core_sys.c | 12 ------- drivers/s390/net/qeth_l2_main.c | 29 ++++++---------- drivers/s390/net/qeth_l3_main.c | 72 ++++++++++++--------------------------- drivers/s390/net/qeth_l3_sys.c | 24 ------------- 6 files changed, 42 insertions(+), 131 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 5a71ae909366..f428d757e888 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -290,9 +290,6 @@ int qeth_set_large_send(struct qeth_card *card, card->dev->features |= NETIF_F_TSO | NETIF_F_SG | NETIF_F_HW_CSUM; } else { - PRINT_WARN("TSO not supported on %s. " - "large_send set to 'no'.\n", - card->dev->name); card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | NETIF_F_HW_CSUM); card->options.large_send = QETH_LARGE_SEND_NO; @@ -1433,7 +1430,7 @@ static int qeth_idx_activate_get_answer(struct qeth_channel *channel, spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); if (rc) { - PRINT_ERR("Error2 in activating channel rc=%d\n", rc); + QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); atomic_set(&channel->irq_pending, 0); wake_up(&card->wait_q); @@ -1503,7 +1500,8 @@ static int qeth_idx_activate_channel(struct qeth_channel *channel, spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); if (rc) { - PRINT_ERR("Error1 in activating channel. rc=%d\n", rc); + QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", + rc); QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); atomic_set(&channel->irq_pending, 0); wake_up(&card->wait_q); @@ -1653,7 +1651,6 @@ int qeth_send_control_data(struct qeth_card *card, int len, reply = qeth_alloc_reply(card); if (!reply) { - PRINT_WARN("Could not alloc qeth_reply!\n"); return -ENOMEM; } reply->callback = reply_cb; @@ -2607,15 +2604,9 @@ void qeth_queue_input_buffer(struct qeth_card *card, int index) if (newcount < count) { /* we are in memory shortage so we switch back to traditional skb allocation and drop packages */ - if (!atomic_read(&card->force_alloc_skb) && - net_ratelimit()) - PRINT_WARN("Switch to alloc skb\n"); atomic_set(&card->force_alloc_skb, 3); count = newcount; } else { - if ((atomic_read(&card->force_alloc_skb) == 1) && - net_ratelimit()) - PRINT_WARN("Switch to sg\n"); atomic_add_unless(&card->force_alloc_skb, -1, 0); } @@ -3029,7 +3020,7 @@ int qeth_get_elements_no(struct qeth_card *card, void *hdr, elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE) + skb->len) >> PAGE_SHIFT); if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { - PRINT_ERR("Invalid size of IP packet " + QETH_DBF_MESSAGE(2, "Invalid size of IP packet " "(Number=%d / Length=%d). Discarded.\n", (elements_needed+elems), skb->len); return 0; @@ -3242,8 +3233,6 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, * free buffers) to handle eddp context */ if (qeth_eddp_check_buffers_for_context(queue, ctx) < 0) { - if (net_ratelimit()) - PRINT_WARN("eddp tx_dropped 1\n"); rc = -EBUSY; goto out; } @@ -3255,7 +3244,6 @@ int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, tmp = qeth_eddp_fill_buffer(queue, ctx, queue->next_buf_to_fill); if (tmp < 0) { - PRINT_ERR("eddp tx_dropped 2\n"); rc = -EBUSY; goto out; } @@ -3597,8 +3585,6 @@ int qeth_snmp_command(struct qeth_card *card, char __user *udata) if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && (!card->options.layer2)) { - PRINT_WARN("SNMP Query MIBS not supported " - "on %s!\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } /* skip 4 bytes (data_len struct member) to get req_len */ @@ -3629,7 +3615,7 @@ int qeth_snmp_command(struct qeth_card *card, char __user *udata) rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, qeth_snmp_command_cb, (void *)&qinfo); if (rc) - PRINT_WARN("SNMP command failed on %s: (0x%x)\n", + QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", QETH_CARD_IFNAME(card), rc); else { if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) @@ -3802,8 +3788,8 @@ retry: if (mpno) mpno = min(mpno - 1, QETH_MAX_PORTNO); if (card->info.portno > mpno) { - PRINT_ERR("Device %s does not offer port number %d \n.", - CARD_BUS_ID(card), card->info.portno); + QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d" + "\n.", CARD_BUS_ID(card), card->info.portno); rc = -ENODEV; goto out; } @@ -3980,8 +3966,6 @@ struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, return skb; no_mem: if (net_ratelimit()) { - PRINT_WARN("No memory for packet received on %s.\n", - QETH_CARD_IFNAME(card)); QETH_DBF_TEXT(TRACE, 2, "noskbmem"); QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card)); } diff --git a/drivers/s390/net/qeth_core_offl.c b/drivers/s390/net/qeth_core_offl.c index 822df8362856..452874e89740 100644 --- a/drivers/s390/net/qeth_core_offl.c +++ b/drivers/s390/net/qeth_core_offl.c @@ -122,8 +122,8 @@ int qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue, if (element == 0) return -EBUSY; else { - PRINT_WARN("could only partially fill eddp " - "buffer!\n"); + QETH_DBF_MESSAGE(2, "could only partially fill" + "eddp buffer!\n"); goto out; } } @@ -143,8 +143,6 @@ int qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue, if (must_refcnt) { must_refcnt = 0; if (qeth_eddp_buf_ref_context(buf, ctx)) { - PRINT_WARN("no memory to create eddp context " - "reference\n"); goto out_check; } } diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c index 08a50f057284..c26e842ad905 100644 --- a/drivers/s390/net/qeth_core_sys.c +++ b/drivers/s390/net/qeth_core_sys.c @@ -129,7 +129,6 @@ static ssize_t qeth_dev_portno_store(struct device *dev, portno = simple_strtoul(buf, &tmp, 16); if (portno > QETH_MAX_PORTNO) { - PRINT_WARN("portno 0x%X is out of range\n", portno); return -EINVAL; } @@ -223,8 +222,6 @@ static ssize_t qeth_dev_prioqing_store(struct device *dev, * if though we have to permit priority queueing */ if (card->qdio.no_out_queues == 1) { - PRINT_WARN("Priority queueing disabled due " - "to hardware limitations!\n"); card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; return -EPERM; } @@ -250,7 +247,6 @@ static ssize_t qeth_dev_prioqing_store(struct device *dev, card->qdio.do_prio_queueing = QETH_NO_PRIO_QUEUEING; card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; } else { - PRINT_WARN("Unknown queueing type '%s'\n", tmp); return -EINVAL; } return count; @@ -291,9 +287,6 @@ static ssize_t qeth_dev_bufcnt_store(struct device *dev, ((cnt > QETH_IN_BUF_COUNT_MAX) ? QETH_IN_BUF_COUNT_MAX : cnt); if (old_cnt != cnt) { rc = qeth_realloc_buffer_pool(card, cnt); - if (rc) - PRINT_WARN("Error (%d) while setting " - "buffer count.\n", rc); } return count; } @@ -355,7 +348,6 @@ static ssize_t qeth_dev_performance_stats_store(struct device *dev, card->perf_stats.initial_rx_packets = card->stats.rx_packets; card->perf_stats.initial_tx_packets = card->stats.tx_packets; } else { - PRINT_WARN("performance_stats: write 0 or 1 to this file!\n"); return -EINVAL; } return count; @@ -399,7 +391,6 @@ static ssize_t qeth_dev_layer2_store(struct device *dev, newdis = QETH_DISCIPLINE_LAYER2; break; default: - PRINT_WARN("layer2: write 0 or 1 to this file!\n"); return -EINVAL; } @@ -463,7 +454,6 @@ static ssize_t qeth_dev_large_send_store(struct device *dev, } else if (!strcmp(tmp, "TSO")) { type = QETH_LARGE_SEND_TSO; } else { - PRINT_WARN("large_send: invalid mode %s!\n", tmp); return -EINVAL; } if (card->options.large_send == type) @@ -503,8 +493,6 @@ static ssize_t qeth_dev_blkt_store(struct qeth_card *card, if (i <= max_value) { *value = i; } else { - PRINT_WARN("blkt total time: write values between" - " 0 and %d to this file!\n", max_value); return -EINVAL; } return count; diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index d35a74c3b475..dd7659c8de16 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -131,14 +131,14 @@ static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card, mac = &cmd->data.setdelmac.mac[0]; /* MAC already registered, needed in couple/uncouple case */ if (cmd->hdr.return_code == 0x2005) { - PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \ + QETH_DBF_MESSAGE(2, "Group MAC %02x:%02x:%02x:%02x:%02x:%02x " "already existing on %s \n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], QETH_CARD_IFNAME(card)); cmd->hdr.return_code = 0; } if (cmd->hdr.return_code) - PRINT_ERR("Could not set group MAC " \ + QETH_DBF_MESSAGE(2, "Could not set group MAC " "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], QETH_CARD_IFNAME(card), cmd->hdr.return_code); @@ -163,7 +163,7 @@ static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card, cmd = (struct qeth_ipa_cmd *) data; mac = &cmd->data.setdelmac.mac[0]; if (cmd->hdr.return_code) - PRINT_ERR("Could not delete group MAC " \ + QETH_DBF_MESSAGE(2, "Could not delete group MAC " "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], QETH_CARD_IFNAME(card), cmd->hdr.return_code); @@ -183,10 +183,8 @@ static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac) mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC); - if (!mc) { - PRINT_ERR("no mem vor mc mac address\n"); + if (!mc) return; - } memcpy(mc->mc_addr, mac, OSA_ADDR_LEN); mc->mc_addrlen = OSA_ADDR_LEN; @@ -277,7 +275,7 @@ static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, QETH_DBF_TEXT(TRACE, 2, "L2sdvcb"); cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.return_code) { - PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. " + QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " "Continuing\n", cmd->data.setdelvlan.vlan_id, QETH_CARD_IFNAME(card), cmd->hdr.return_code); QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command); @@ -330,8 +328,6 @@ static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) spin_lock_bh(&card->vlanlock); list_add_tail(&id->list, &card->vid_list); spin_unlock_bh(&card->vlanlock); - } else { - PRINT_ERR("no memory for vid\n"); } } @@ -547,16 +543,15 @@ static int qeth_l2_request_initial_mac(struct qeth_card *card) rc = qeth_query_setadapterparms(card); if (rc) { - PRINT_WARN("could not query adapter parameters on device %s: " - "x%x\n", CARD_BUS_ID(card), rc); + QETH_DBF_MESSAGE(2, "could not query adapter parameters on " + "device %s: x%x\n", CARD_BUS_ID(card), rc); } if (card->info.guestlan) { rc = qeth_setadpparms_change_macaddr(card); if (rc) { - PRINT_WARN("couldn't get MAC address on " - "device %s: x%x\n", - CARD_BUS_ID(card), rc); + QETH_DBF_MESSAGE(2, "couldn't get MAC address on " + "device %s: x%x\n", CARD_BUS_ID(card), rc); QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); return rc; } @@ -582,8 +577,6 @@ static int qeth_l2_set_mac_address(struct net_device *dev, void *p) } if (card->info.type == QETH_CARD_TYPE_OSN) { - PRINT_WARN("Setting MAC address on %s is not supported.\n", - dev->name); QETH_DBF_TEXT(TRACE, 3, "setmcOSN"); return -EOPNOTSUPP; } @@ -663,7 +656,7 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) ctx = qeth_eddp_create_context(card, new_skb, hdr, skb->sk->sk_protocol); if (ctx == NULL) { - PRINT_WARN("could not create eddp context\n"); + QETH_DBF_MESSAGE(2, "could not create eddp context\n"); goto tx_drop; } } else { @@ -1152,7 +1145,7 @@ static int qeth_osn_send_control_data(struct qeth_card *card, int len, (addr_t) iob, 0, 0); spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); if (rc) { - PRINT_WARN("qeth_osn_send_control_data: " + QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " "ccw_device_start rc = %i\n", rc); QETH_DBF_TEXT_(TRACE, 2, " err%d", rc); qeth_release_buffer(iob->channel, iob); diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index b041ea8c9577..de256e48bfe9 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -311,7 +311,6 @@ static struct qeth_ipaddr *qeth_l3_get_addr_buffer( addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC); if (addr == NULL) { - PRINT_WARN("Not enough memory to add address\n"); return NULL; } addr->type = QETH_IP_TYPE_NORMAL; @@ -649,15 +648,6 @@ static void qeth_l3_correct_routing_type(struct qeth_card *card, } } out_inval: - PRINT_WARN("Routing type '%s' not supported for interface %s.\n" - "Router status set to 'no router'.\n", - ((*type == PRIMARY_ROUTER)? "primary router" : - (*type == SECONDARY_ROUTER)? "secondary router" : - (*type == PRIMARY_CONNECTOR)? "primary connector" : - (*type == SECONDARY_CONNECTOR)? "secondary connector" : - (*type == MULTICAST_ROUTER)? "multicast router" : - "unknown"), - card->dev->name); *type = NO_ROUTER; } @@ -674,9 +664,9 @@ int qeth_l3_setrouting_v4(struct qeth_card *card) QETH_PROT_IPV4); if (rc) { card->options.route4.type = NO_ROUTER; - PRINT_WARN("Error (0x%04x) while setting routing type on %s. " - "Type set to 'no router'.\n", - rc, QETH_CARD_IFNAME(card)); + QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" + " on %s. Type set to 'no router'.\n", rc, + QETH_CARD_IFNAME(card)); } return rc; } @@ -697,9 +687,9 @@ int qeth_l3_setrouting_v6(struct qeth_card *card) QETH_PROT_IPV6); if (rc) { card->options.route6.type = NO_ROUTER; - PRINT_WARN("Error (0x%04x) while setting routing type on %s. " - "Type set to 'no router'.\n", - rc, QETH_CARD_IFNAME(card)); + QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" + " on %s. Type set to 'no router'.\n", rc, + QETH_CARD_IFNAME(card)); } #endif return rc; @@ -737,7 +727,6 @@ int qeth_l3_add_ipato_entry(struct qeth_card *card, if (!memcmp(ipatoe->addr, new->addr, (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && (ipatoe->mask_bits == new->mask_bits)) { - PRINT_WARN("ipato entry already exists!\n"); rc = -EEXIST; break; } @@ -802,7 +791,6 @@ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto, rc = -EEXIST; spin_unlock_irqrestore(&card->ip_lock, flags); if (rc) { - PRINT_WARN("Cannot add VIPA. Address already exists!\n"); return rc; } if (!qeth_l3_add_ip(card, ipaddr)) @@ -867,7 +855,6 @@ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto, rc = -EEXIST; spin_unlock_irqrestore(&card->ip_lock, flags); if (rc) { - PRINT_WARN("Cannot add RXIP. Address already exists!\n"); return rc; } if (!qeth_l3_add_ip(card, ipaddr)) @@ -1020,23 +1007,23 @@ static int qeth_l3_setadapter_hstr(struct qeth_card *card) IPA_SETADP_SET_BROADCAST_MODE, card->options.broadcast_mode); if (rc) - PRINT_WARN("couldn't set broadcast mode on " + QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on " "device %s: x%x\n", CARD_BUS_ID(card), rc); rc = qeth_l3_send_setadp_mode(card, IPA_SETADP_ALTER_MAC_ADDRESS, card->options.macaddr_mode); if (rc) - PRINT_WARN("couldn't set macaddr mode on " + QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on " "device %s: x%x\n", CARD_BUS_ID(card), rc); return rc; } if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL) - PRINT_WARN("set adapter parameters not available " + QETH_DBF_MESSAGE(2, "set adapter parameters not available " "to set broadcast mode, using ALLRINGS " "on device %s:\n", CARD_BUS_ID(card)); if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL) - PRINT_WARN("set adapter parameters not available " + QETH_DBF_MESSAGE(2, "set adapter parameters not available " "to set macaddr mode, using NONCANONICAL " "on device %s:\n", CARD_BUS_ID(card)); return 0; @@ -2182,8 +2169,6 @@ static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) if (card->info.guestlan) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { - PRINT_WARN("ARP processing not supported " - "on %s!\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, @@ -2191,8 +2176,8 @@ static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) no_entries); if (rc) { tmp = rc; - PRINT_WARN("Could not set number of ARP entries on %s: " - "%s (0x%x/%d)\n", QETH_CARD_IFNAME(card), + QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on " + "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; @@ -2260,9 +2245,6 @@ static int qeth_l3_arp_query_cb(struct qeth_card *card, qdata->no_entries * uentry_size){ QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM); cmd->hdr.return_code = -ENOMEM; - PRINT_WARN("query ARP user space buffer is too small for " - "the returned number of ARP entries. " - "Aborting query!\n"); goto out_error; } QETH_DBF_TEXT_(TRACE, 4, "anore%i", @@ -2324,8 +2306,6 @@ static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ IPA_ARP_PROCESSING)) { - PRINT_WARN("ARP processing not supported " - "on %s!\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } /* get size of userspace buffer and mask_bits -> 6 bytes */ @@ -2344,7 +2324,7 @@ static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) qeth_l3_arp_query_cb, (void *)&qinfo); if (rc) { tmp = rc; - PRINT_WARN("Error while querying ARP cache on %s: %s " + QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s " "(0x%x/%d)\n", QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); if (copy_to_user(udata, qinfo.udata, 4)) @@ -2375,8 +2355,6 @@ static int qeth_l3_arp_add_entry(struct qeth_card *card, if (card->info.guestlan) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { - PRINT_WARN("ARP processing not supported " - "on %s!\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } @@ -2391,10 +2369,9 @@ static int qeth_l3_arp_add_entry(struct qeth_card *card, if (rc) { tmp = rc; qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); - PRINT_WARN("Could not add ARP entry for address %s on %s: " - "%s (0x%x/%d)\n", - buf, QETH_CARD_IFNAME(card), - qeth_l3_arp_get_error_cause(&rc), tmp, tmp); + QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s " + "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), + qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; } @@ -2417,8 +2394,6 @@ static int qeth_l3_arp_remove_entry(struct qeth_card *card, if (card->info.guestlan) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { - PRINT_WARN("ARP processing not supported " - "on %s!\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } memcpy(buf, entry, 12); @@ -2433,10 +2408,9 @@ static int qeth_l3_arp_remove_entry(struct qeth_card *card, tmp = rc; memset(buf, 0, 16); qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); - PRINT_WARN("Could not delete ARP entry for address %s on %s: " - "%s (0x%x/%d)\n", - buf, QETH_CARD_IFNAME(card), - qeth_l3_arp_get_error_cause(&rc), tmp, tmp); + QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s" + " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), + qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; } @@ -2456,16 +2430,14 @@ static int qeth_l3_arp_flush_cache(struct qeth_card *card) if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { - PRINT_WARN("ARP processing not supported " - "on %s!\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); if (rc) { tmp = rc; - PRINT_WARN("Could not flush ARP cache on %s: %s (0x%x/%d)\n", - QETH_CARD_IFNAME(card), + QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s " + "(0x%x/%d)\n", QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; @@ -2724,7 +2696,7 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) ctx = qeth_eddp_create_context(card, new_skb, hdr, skb->sk->sk_protocol); if (ctx == NULL) { - PRINT_WARN("could not create eddp context\n"); + QETH_DBF_MESSAGE(2, "could not create eddp context\n"); goto tx_drop; } } else { diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c index 08f51fd902c4..ac1993708ae9 100644 --- a/drivers/s390/net/qeth_l3_sys.c +++ b/drivers/s390/net/qeth_l3_sys.c @@ -85,7 +85,6 @@ static ssize_t qeth_l3_dev_route_store(struct qeth_card *card, } else if (!strcmp(tmp, "multicast_router")) { route->type = MULTICAST_ROUTER; } else { - PRINT_WARN("Invalid routing type '%s'.\n", tmp); return -EINVAL; } if (((card->state == CARD_STATE_SOFTSETUP) || @@ -137,9 +136,6 @@ static ssize_t qeth_l3_dev_route6_store(struct device *dev, return -EINVAL; if (!qeth_is_supported(card, IPA_IPV6)) { - PRINT_WARN("IPv6 not supported for interface %s.\n" - "Routing status no changed.\n", - QETH_CARD_IFNAME(card)); return -ENOTSUPP; } @@ -179,7 +175,6 @@ static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev, if ((i == 0) || (i == 1)) card->options.fake_broadcast = i; else { - PRINT_WARN("fake_broadcast: write 0 or 1 to this file!\n"); return -EINVAL; } return count; @@ -220,7 +215,6 @@ static ssize_t qeth_l3_dev_broadcast_mode_store(struct device *dev, if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) || (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) { - PRINT_WARN("Device is not a tokenring device!\n"); return -EINVAL; } @@ -233,8 +227,6 @@ static ssize_t qeth_l3_dev_broadcast_mode_store(struct device *dev, card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS; return count; } else { - PRINT_WARN("broadcast_mode: invalid mode %s!\n", - tmp); return -EINVAL; } return count; @@ -275,7 +267,6 @@ static ssize_t qeth_l3_dev_canonical_macaddr_store(struct device *dev, if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) || (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) { - PRINT_WARN("Device is not a tokenring device!\n"); return -EINVAL; } @@ -285,7 +276,6 @@ static ssize_t qeth_l3_dev_canonical_macaddr_store(struct device *dev, QETH_TR_MACADDR_CANONICAL : QETH_TR_MACADDR_NONCANONICAL; else { - PRINT_WARN("canonical_macaddr: write 0 or 1 to this file!\n"); return -EINVAL; } return count; @@ -327,7 +317,6 @@ static ssize_t qeth_l3_dev_checksum_store(struct device *dev, else if (!strcmp(tmp, "no_checksumming")) card->options.checksum_type = NO_CHECKSUMMING; else { - PRINT_WARN("Unknown checksumming type '%s'\n", tmp); return -EINVAL; } return count; @@ -382,8 +371,6 @@ static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev, } else if (!strcmp(tmp, "0")) { card->ipato.enabled = 0; } else { - PRINT_WARN("ipato_enable: write 0, 1 or 'toggle' to " - "this file\n"); return -EINVAL; } return count; @@ -422,8 +409,6 @@ static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev, } else if (!strcmp(tmp, "0")) { card->ipato.invert4 = 0; } else { - PRINT_WARN("ipato_invert4: write 0, 1 or 'toggle' to " - "this file\n"); return -EINVAL; } return count; @@ -486,13 +471,10 @@ static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto, /* get address string */ end = strchr(start, '/'); if (!end || (end - start >= 40)) { - PRINT_WARN("Invalid format for ipato_addx/delx. " - "Use /\n"); return -EINVAL; } strncpy(buffer, start, end - start); if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) { - PRINT_WARN("Invalid IP address format!\n"); return -EINVAL; } start = end + 1; @@ -500,7 +482,6 @@ static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto, if (!strlen(start) || (tmp == start) || (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) { - PRINT_WARN("Invalid mask bits for ipato_addx/delx !\n"); return -EINVAL; } return 0; @@ -520,7 +501,6 @@ static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count, ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL); if (!ipatoe) { - PRINT_WARN("No memory to allocate ipato entry\n"); return -ENOMEM; } ipatoe->proto = proto; @@ -609,8 +589,6 @@ static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev, } else if (!strcmp(tmp, "0")) { card->ipato.invert6 = 0; } else { - PRINT_WARN("ipato_invert6: write 0, 1 or 'toggle' to " - "this file\n"); return -EINVAL; } return count; @@ -724,7 +702,6 @@ static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto, u8 *addr) { if (qeth_l3_string_to_ipaddr(buf, proto, addr)) { - PRINT_WARN("Invalid IP address format!\n"); return -EINVAL; } return 0; @@ -891,7 +868,6 @@ static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto, u8 *addr) { if (qeth_l3_string_to_ipaddr(buf, proto, addr)) { - PRINT_WARN("Invalid IP address format!\n"); return -EINVAL; } return 0; -- cgit v1.2.3 From 345aa66e97e61dccafaaa835e4b20d9b241e187f Mon Sep 17 00:00:00 2001 From: Peter Tiedemann Date: Fri, 6 Jun 2008 12:37:47 +0200 Subject: qeth: Prepare-function to call s390dbf was wrong Prepare-function to call s390dbf was wrong handling variable arguments. This worked as macro but not as function any more. Now using va_list processing. Signed-off-by: Peter Tiedemann Signed-off-by: Frank Blaschka Signed-off-by: Jeff Garzik --- drivers/s390/net/qeth_core_main.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index f428d757e888..9a71dae223e8 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -3983,15 +3983,17 @@ static void qeth_unregister_dbf_views(void) } } -void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *text, ...) +void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...) { char dbf_txt_buf[32]; + va_list args; if (level > (qeth_dbf[dbf_nix].id)->level) return; - snprintf(dbf_txt_buf, sizeof(dbf_txt_buf), text); + va_start(args, fmt); + vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); + va_end(args); debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf); - } EXPORT_SYMBOL_GPL(qeth_dbf_longtext); -- cgit v1.2.3 From d0ec0f549705b7ecfb787f02512606b08fe5b291 Mon Sep 17 00:00:00 2001 From: Frank Blaschka Date: Fri, 6 Jun 2008 12:37:48 +0200 Subject: qeth: start dev queue after tx drop error In case the xmit function drop out with an error, we have to wake the netdevice queue to start another xmit. Signed-off-by: Frank Blaschka Signed-off-by: Martin Schwidefsky Signed-off-by: Jeff Garzik --- drivers/s390/net/qeth_l2_main.c | 1 + drivers/s390/net/qeth_l3_main.c | 1 + 2 files changed, 2 insertions(+) (limited to 'drivers/s390') diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index dd7659c8de16..f682f7b14480 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -721,6 +721,7 @@ tx_drop: if ((new_skb != skb) && new_skb) dev_kfree_skb_any(new_skb); dev_kfree_skb_any(skb); + netif_wake_queue(dev); return NETDEV_TX_OK; } diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index de256e48bfe9..999552c83bbe 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2764,6 +2764,7 @@ tx_drop: if ((new_skb != skb) && new_skb) dev_kfree_skb_any(new_skb); dev_kfree_skb_any(skb); + netif_wake_queue(dev); return NETDEV_TX_OK; } -- cgit v1.2.3