diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/block/dasd.c | 3 | ||||
| -rw-r--r-- | drivers/s390/block/dasd_3990_erp.c | 7 | ||||
| -rw-r--r-- | drivers/s390/char/zcore.c | 6 | ||||
| -rw-r--r-- | drivers/s390/cio/chsc.c | 29 | ||||
| -rw-r--r-- | drivers/s390/cio/chsc_sch.c | 2 | ||||
| -rw-r--r-- | drivers/s390/cio/cio.c | 18 | ||||
| -rw-r--r-- | drivers/s390/cio/css.c | 16 | ||||
| -rw-r--r-- | drivers/s390/cio/device_fsm.c | 2 |
8 files changed, 42 insertions, 41 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index bbea90baf98f..acf222f91f5a 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -1899,7 +1899,8 @@ restart: /* Process requests that may be recovered */ if (cqr->status == DASD_CQR_NEED_ERP) { erp_fn = base->discipline->erp_action(cqr); - erp_fn(cqr); + if (IS_ERR(erp_fn(cqr))) + continue; goto restart; } diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index 6927e751ce3e..6632649dd6aa 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -2309,7 +2309,7 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr) cqr->retries); dasd_block_set_timer(device->block, (HZ << 3)); } - return cqr; + return erp; } ccw = cqr->cpaddr; @@ -2372,6 +2372,9 @@ dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr) /* add erp and initialize with default TIC */ erp = dasd_3990_erp_add_erp(cqr); + if (IS_ERR(erp)) + return erp; + /* inspect sense, determine specific ERP if possible */ if (erp != cqr) { @@ -2711,6 +2714,8 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr) if (erp == NULL) { /* no matching erp found - set up erp */ erp = dasd_3990_erp_additional_erp(cqr); + if (IS_ERR(erp)) + return erp; } else { /* matching erp found - set all leading erp's to DONE */ erp = dasd_3990_erp_handle_match_erp(cqr, erp); diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 18daf16aa357..7217966f7d31 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -638,11 +638,7 @@ static int __init zcore_reipl_init(void) rc = memcpy_hsa_kernel(ipl_block, ipib_info.ipib, PAGE_SIZE); else rc = memcpy_real(ipl_block, (void *) ipib_info.ipib, PAGE_SIZE); - if (rc) { - free_page((unsigned long) ipl_block); - return rc; - } - if (csum_partial(ipl_block, ipl_block->hdr.len, 0) != + if (rc || csum_partial(ipl_block, ipl_block->hdr.len, 0) != ipib_info.checksum) { TRACE("Checksum does not match\n"); free_page((unsigned long) ipl_block); diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 4038f5b4f144..ce7cb87479fe 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -29,6 +29,7 @@ #include "chsc.h" static void *sei_page; +static DEFINE_SPINLOCK(sda_lock); /** * chsc_error_from_response() - convert a chsc response to an error @@ -832,11 +833,10 @@ void __init chsc_free_sei_area(void) kfree(sei_page); } -int __init -chsc_enable_facility(int operation_code) +int chsc_enable_facility(int operation_code) { int ret; - struct { + static struct { struct chsc_header request; u8 reserved1:4; u8 format:4; @@ -849,33 +849,32 @@ chsc_enable_facility(int operation_code) u32 reserved5:4; u32 format2:4; u32 reserved6:24; - } __attribute__ ((packed)) *sda_area; + } __attribute__ ((packed, aligned(4096))) sda_area; - sda_area = (void *)get_zeroed_page(GFP_KERNEL|GFP_DMA); - if (!sda_area) - return -ENOMEM; - sda_area->request.length = 0x0400; - sda_area->request.code = 0x0031; - sda_area->operation_code = operation_code; + spin_lock(&sda_lock); + memset(&sda_area, 0, sizeof(sda_area)); + sda_area.request.length = 0x0400; + sda_area.request.code = 0x0031; + sda_area.operation_code = operation_code; - ret = chsc(sda_area); + ret = chsc(&sda_area); if (ret > 0) { ret = (ret == 3) ? -ENODEV : -EBUSY; goto out; } - switch (sda_area->response.code) { + switch (sda_area.response.code) { case 0x0101: ret = -EOPNOTSUPP; break; default: - ret = chsc_error_from_response(sda_area->response.code); + ret = chsc_error_from_response(sda_area.response.code); } if (ret != 0) CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n", - operation_code, sda_area->response.code); + operation_code, sda_area.response.code); out: - free_page((unsigned long)sda_area); + spin_unlock(&sda_lock); return ret; } diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c index 404f630c27ca..3b6f4adc5094 100644 --- a/drivers/s390/cio/chsc_sch.c +++ b/drivers/s390/cio/chsc_sch.c @@ -124,7 +124,7 @@ static int chsc_subchannel_prepare(struct subchannel *sch) * since we don't have a way to clear the subchannel and * cannot disable it with a request running. */ - cc = stsch(sch->schid, &schib); + cc = stsch_err(sch->schid, &schib); if (!cc && scsw_stctl(&schib.scsw)) return -EAGAIN; return 0; diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index f736cdcf08ad..5feea1a371e1 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -361,7 +361,7 @@ int cio_commit_config(struct subchannel *sch) struct schib schib; int ccode, retry, ret = 0; - if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib)) + if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib)) return -ENODEV; for (retry = 0; retry < 5; retry++) { @@ -372,7 +372,7 @@ int cio_commit_config(struct subchannel *sch) return ccode; switch (ccode) { case 0: /* successful */ - if (stsch(sch->schid, &schib) || + if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib)) return -ENODEV; if (cio_check_config(sch, &schib)) { @@ -404,7 +404,7 @@ int cio_update_schib(struct subchannel *sch) { struct schib schib; - if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib)) + if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib)) return -ENODEV; memcpy(&sch->schib, &schib, sizeof(schib)); @@ -771,7 +771,7 @@ cio_get_console_sch_no(void) if (console_irq != -1) { /* VM provided us with the irq number of the console. */ schid.sch_no = console_irq; - if (stsch(schid, &console_subchannel.schib) != 0 || + if (stsch_err(schid, &console_subchannel.schib) != 0 || (console_subchannel.schib.pmcw.st != SUBCHANNEL_TYPE_IO) || !console_subchannel.schib.pmcw.dnv) return -1; @@ -863,10 +863,10 @@ __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib) cc = 0; for (retry=0;retry<3;retry++) { schib->pmcw.ena = 0; - cc = msch(schid, schib); + cc = msch_err(schid, schib); if (cc) return (cc==3?-ENODEV:-EBUSY); - if (stsch(schid, schib) || !css_sch_is_valid(schib)) + if (stsch_err(schid, schib) || !css_sch_is_valid(schib)) return -ENODEV; if (!schib->pmcw.ena) return 0; @@ -913,7 +913,7 @@ static int stsch_reset(struct subchannel_id schid, struct schib *addr) pgm_check_occured = 0; s390_base_pgm_handler_fn = cio_reset_pgm_check_handler; - rc = stsch(schid, addr); + rc = stsch_err(schid, addr); s390_base_pgm_handler_fn = NULL; /* The program check handler could have changed pgm_check_occured. */ @@ -950,7 +950,7 @@ static int __shutdown_subchannel_easy(struct subchannel_id schid, void *data) /* No default clear strategy */ break; } - stsch(schid, &schib); + stsch_err(schid, &schib); __disable_subchannel_easy(schid, &schib); } out: @@ -1086,7 +1086,7 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo) schid = *(struct subchannel_id *)&S390_lowcore.subchannel_id; if (!schid.one) return -ENODEV; - if (stsch(schid, &schib)) + if (stsch_err(schid, &schib)) return -ENODEV; if (schib.pmcw.st != SUBCHANNEL_TYPE_IO) return -ENODEV; diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 2769da54f2b9..511649115bd7 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -870,15 +870,10 @@ static int __init css_bus_init(void) /* Try to enable MSS. */ ret = chsc_enable_facility(CHSC_SDA_OC_MSS); - switch (ret) { - case 0: /* Success. */ - max_ssid = __MAX_SSID; - break; - case -ENOMEM: - goto out; - default: + if (ret) max_ssid = 0; - } + else /* Success. */ + max_ssid = __MAX_SSID; ret = slow_subchannel_init(); if (ret) @@ -1048,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void) } subsys_initcall_sync(channel_subsystem_init_sync); +void channel_subsystem_reinit(void) +{ + chsc_enable_facility(CHSC_SDA_OC_MSS); +} + #ifdef CONFIG_PROC_FS static ssize_t cio_settle_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index c56ab94612f9..c9b852647f01 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -45,7 +45,7 @@ static void ccw_timeout_log(struct ccw_device *cdev) sch = to_subchannel(cdev->dev.parent); private = to_io_private(sch); orb = &private->orb; - cc = stsch(sch->schid, &schib); + cc = stsch_err(sch->schid, &schib); printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, " "device information:\n", get_clock()); |