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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-04 18:45:50 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-04 18:45:50 +0200 |
commit | ad0bf4eb91c2f9b93479b679e5472094ddb76da8 (patch) | |
tree | 4025ab22e3ea949259a5078d06cf7a75afbb8ed3 /drivers/pci | |
parent | Merge tag 'arc-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgup... (diff) | |
parent | s390/mm: cleanup init_new_context() callback (diff) | |
download | linux-ad0bf4eb91c2f9b93479b679e5472094ddb76da8.tar.xz linux-ad0bf4eb91c2f9b93479b679e5472094ddb76da8.zip |
Merge tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Update maintainers. Niklas Schnelle takes over zpci and Vineeth
Vijayan common io code.
- Extend cpuinfo to include topology information.
- Add new extended counters for IBM z15 and sampling buffer allocation
rework in perf code.
- Add control over zeroing out memory during system restart.
- CCA protected key block version 2 support and other
fixes/improvements in crypto code.
- Convert to new fallthrough; annotations.
- Replace zero-length arrays with flexible-arrays.
- QDIO debugfs and other small improvements.
- Drop 2-level paging support optimization for compat tasks. Varios mm
cleanups.
- Remove broken and unused hibernate / power management support.
- Remove fake numa support which does not bring any benefits.
- Exclude offline CPUs from CPU topology masks to be more consistent
with other architectures.
- Prevent last branching instruction address leaking to userspace.
- Other small various fixes and improvements all over the code.
* tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits)
s390/mm: cleanup init_new_context() callback
s390/mm: cleanup virtual memory constants usage
s390/mm: remove page table downgrade support
s390/qdio: set qdio_irq->cdev at allocation time
s390/qdio: remove unused function declarations
s390/ccwgroup: remove pm support
s390/ap: remove power management code from ap bus and drivers
s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc
s390/mm: cleanup arch_get_unmapped_area() and friends
s390/ism: remove pm support
s390/cio: use fallthrough;
s390/vfio: use fallthrough;
s390/zcrypt: use fallthrough;
s390: use fallthrough;
s390/cpum_sf: Fix wrong page count in error message
s390/diag: fix display of diagnose call statistics
s390/ap: Remove ap device suspend and resume callbacks
s390/pci: Improve handling of unset UID
s390/pci: Fix zpci_alloc_domain() over allocation
s390/qdio: pass ISC as parameter to chsc_sadc()
...
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/hotplug/s390_pci_hpc.c | 99 |
1 files changed, 29 insertions, 70 deletions
diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c index 30ee72268790..39295d88f670 100644 --- a/drivers/pci/hotplug/s390_pci_hpc.c +++ b/drivers/pci/hotplug/s390_pci_hpc.c @@ -19,7 +19,6 @@ #include <asm/sclp.h> #define SLOT_NAME_SIZE 10 -static LIST_HEAD(s390_hotplug_slot_list); static int zpci_fn_configured(enum zpci_state state) { @@ -27,97 +26,86 @@ static int zpci_fn_configured(enum zpci_state state) state == ZPCI_FN_STATE_ONLINE; } -/* - * struct slot - slot information for each *physical* slot - */ -struct slot { - struct list_head slot_list; - struct hotplug_slot hotplug_slot; - struct zpci_dev *zdev; -}; - -static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot) +static inline int zdev_configure(struct zpci_dev *zdev) { - return container_of(hotplug_slot, struct slot, hotplug_slot); -} - -static inline int slot_configure(struct slot *slot) -{ - int ret = sclp_pci_configure(slot->zdev->fid); + int ret = sclp_pci_configure(zdev->fid); - zpci_dbg(3, "conf fid:%x, rc:%d\n", slot->zdev->fid, ret); + zpci_dbg(3, "conf fid:%x, rc:%d\n", zdev->fid, ret); if (!ret) - slot->zdev->state = ZPCI_FN_STATE_CONFIGURED; + zdev->state = ZPCI_FN_STATE_CONFIGURED; return ret; } -static inline int slot_deconfigure(struct slot *slot) +static inline int zdev_deconfigure(struct zpci_dev *zdev) { - int ret = sclp_pci_deconfigure(slot->zdev->fid); + int ret = sclp_pci_deconfigure(zdev->fid); - zpci_dbg(3, "deconf fid:%x, rc:%d\n", slot->zdev->fid, ret); + zpci_dbg(3, "deconf fid:%x, rc:%d\n", zdev->fid, ret); if (!ret) - slot->zdev->state = ZPCI_FN_STATE_STANDBY; + zdev->state = ZPCI_FN_STATE_STANDBY; return ret; } static int enable_slot(struct hotplug_slot *hotplug_slot) { - struct slot *slot = to_slot(hotplug_slot); + struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev, + hotplug_slot); int rc; - if (slot->zdev->state != ZPCI_FN_STATE_STANDBY) + if (zdev->state != ZPCI_FN_STATE_STANDBY) return -EIO; - rc = slot_configure(slot); + rc = zdev_configure(zdev); if (rc) return rc; - rc = zpci_enable_device(slot->zdev); + rc = zpci_enable_device(zdev); if (rc) goto out_deconfigure; - pci_scan_slot(slot->zdev->bus, ZPCI_DEVFN); + pci_scan_slot(zdev->bus, ZPCI_DEVFN); pci_lock_rescan_remove(); - pci_bus_add_devices(slot->zdev->bus); + pci_bus_add_devices(zdev->bus); pci_unlock_rescan_remove(); return rc; out_deconfigure: - slot_deconfigure(slot); + zdev_deconfigure(zdev); return rc; } static int disable_slot(struct hotplug_slot *hotplug_slot) { - struct slot *slot = to_slot(hotplug_slot); + struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev, + hotplug_slot); struct pci_dev *pdev; int rc; - if (!zpci_fn_configured(slot->zdev->state)) + if (!zpci_fn_configured(zdev->state)) return -EIO; - pdev = pci_get_slot(slot->zdev->bus, ZPCI_DEVFN); + pdev = pci_get_slot(zdev->bus, ZPCI_DEVFN); if (pdev) { pci_stop_and_remove_bus_device_locked(pdev); pci_dev_put(pdev); } - rc = zpci_disable_device(slot->zdev); + rc = zpci_disable_device(zdev); if (rc) return rc; - return slot_deconfigure(slot); + return zdev_deconfigure(zdev); } static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) { - struct slot *slot = to_slot(hotplug_slot); + struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev, + hotplug_slot); - switch (slot->zdev->state) { + switch (zdev->state) { case ZPCI_FN_STATE_STANDBY: *value = 0; break; @@ -145,44 +133,15 @@ static const struct hotplug_slot_ops s390_hotplug_slot_ops = { int zpci_init_slot(struct zpci_dev *zdev) { char name[SLOT_NAME_SIZE]; - struct slot *slot; - int rc; - if (!zdev) - return 0; - - slot = kzalloc(sizeof(*slot), GFP_KERNEL); - if (!slot) - goto error; - - slot->zdev = zdev; - slot->hotplug_slot.ops = &s390_hotplug_slot_ops; + zdev->hotplug_slot.ops = &s390_hotplug_slot_ops; snprintf(name, SLOT_NAME_SIZE, "%08x", zdev->fid); - rc = pci_hp_register(&slot->hotplug_slot, zdev->bus, - ZPCI_DEVFN, name); - if (rc) - goto error_reg; - - list_add(&slot->slot_list, &s390_hotplug_slot_list); - return 0; - -error_reg: - kfree(slot); -error: - return -ENOMEM; + return pci_hp_register(&zdev->hotplug_slot, zdev->bus, + ZPCI_DEVFN, name); } void zpci_exit_slot(struct zpci_dev *zdev) { - struct slot *slot, *next; - - list_for_each_entry_safe(slot, next, &s390_hotplug_slot_list, - slot_list) { - if (slot->zdev != zdev) - continue; - list_del(&slot->slot_list); - pci_hp_deregister(&slot->hotplug_slot); - kfree(slot); - } + pci_hp_deregister(&zdev->hotplug_slot); } |