diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-24 09:49:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-24 09:49:09 -0700 |
| commit | e017507f37d5cb8b541df165a824958bc333bec3 (patch) | |
| tree | 87ab0986474486623d9957efda9f3f9ea3b14069 /drivers | |
| parent | 759e2a253aaefbb6da9253d517a5a8fe1801ce0f (diff) | |
| parent | 27f6b416626a240e1b46f646d2e0c5266f4eac95 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 changes from Martin Schwidefsky:
"No new functions, a few changes to make the code more robust, some
cleanups and bug fixes."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (21 commits)
s390/vtimer: rework virtual timer interface
s390/dis: Add the servc instruction to the disassembler.
s390/comments: unify copyright messages and remove file names
s390/lgr: Add init check to lgr_info_log()
s390/cpu init: use __get_cpu_var instead of per_cpu
s390/idle: reduce size of s390_idle_data structure
s390/idle: fix sequence handling vs cpu hotplug
s390/ap: resend enable adapter interrupt request.
s390/hypfs: Add missing get_next_ino()
s390/dasd: add shutdown action
s390/ipl: Fix ipib handling for "dumpreipl" shutdown action
s390/smp: make absolute lowcore / cpu restart parameter accesses more robust
s390/vmlogrdr: cleanup driver attribute usage
s390/vmlogrdr: cleanup device attribute usage
s390/ccwgroup: remove unused ccwgroup_device member
s390/cio/chp: cleanup attribute usage
s390/sigp: use sigp order code defines in assembly code
s390/smp: use sigp cpu status definitions
s390/smp/kvm: unifiy sigp definitions
s390/smp: remove redundant check
...
Diffstat (limited to 'drivers')
120 files changed, 159 insertions, 262 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index f3509120a50..15370a2c5ff 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -1,5 +1,4 @@ /* - * File...........: linux/drivers/s390/block/dasd.c * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> * Horst Hummel <Horst.Hummel@de.ibm.com> * Carsten Otte <Cotte@de.ibm.com> @@ -52,7 +51,7 @@ void dasd_int_handler(struct ccw_device *, unsigned long, struct irb *); MODULE_AUTHOR("Holger Smolinski <Holger.Smolinski@de.ibm.com>"); MODULE_DESCRIPTION("Linux on S/390 DASD device driver," - " Copyright 2000 IBM Corporation"); + " Copyright IBM Corp. 2000"); MODULE_SUPPORTED_DEVICE("dasd"); MODULE_LICENSE("GPL"); @@ -82,6 +81,7 @@ static void dasd_profile_exit(struct dasd_profile *); static wait_queue_head_t dasd_init_waitq; static wait_queue_head_t dasd_flush_wq; static wait_queue_head_t generic_waitq; +static wait_queue_head_t shutdown_waitq; /* * Allocate memory for a new device structure. @@ -1994,6 +1994,8 @@ static void dasd_device_tasklet(struct dasd_device *device) /* Now check if the head of the ccw queue needs to be started. */ __dasd_device_start_head(device); spin_unlock_irq(get_ccwdev_lock(device->cdev)); + if (waitqueue_active(&shutdown_waitq)) + wake_up(&shutdown_waitq); dasd_put_device(device); } @@ -2632,6 +2634,8 @@ static void dasd_block_tasklet(struct dasd_block *block) __dasd_block_start_head(block); spin_unlock(&block->queue_lock); spin_unlock_irq(&block->request_queue_lock); + if (waitqueue_active(&shutdown_waitq)) + wake_up(&shutdown_waitq); dasd_put_device(block->base); } @@ -3474,6 +3478,32 @@ char *dasd_get_sense(struct irb *irb) } EXPORT_SYMBOL_GPL(dasd_get_sense); +static inline int _wait_for_empty_queues(struct dasd_device *device) +{ + if (device->block) + return list_empty(&device->ccw_queue) && + list_empty(&device->block->ccw_queue); + else + return list_empty(&device->ccw_queue); +} + +void dasd_generic_shutdown(struct ccw_device *cdev) +{ + struct dasd_device *device; + + device = dasd_device_from_cdev(cdev); + if (IS_ERR(device)) + return; + + if (device->block) + dasd_schedule_block_bh(device->block); + + dasd_schedule_device_bh(device); + + wait_event(shutdown_waitq, _wait_for_empty_queues(device)); +} +EXPORT_SYMBOL_GPL(dasd_generic_shutdown); + static int __init dasd_init(void) { int rc; @@ -3481,6 +3511,7 @@ static int __init dasd_init(void) init_waitqueue_head(&dasd_init_waitq); init_waitqueue_head(&dasd_flush_wq); init_waitqueue_head(&generic_waitq); + init_waitqueue_head(&shutdown_waitq); /* register 'common' DASD debug area, used for all DBF_XXX calls */ dasd_debug_area = debug_register("dasd", 1, 1, 8 * sizeof(long)); diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index 0326571e7ff..f8212d54013 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -1,9 +1,8 @@ /* - * File...........: linux/drivers/s390/block/dasd_3990_erp.c * Author(s)......: Horst Hummel <Horst.Hummel@de.ibm.com> * Holger Smolinski <Holger.Smolinski@de.ibm.com> * Bugreports.to..: <Linux390@de.ibm.com> - * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000, 2001 + * Copyright IBM Corp. 2000, 2001 * */ diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c index b3beed5434e..157defe5e06 100644 --- a/drivers/s390/block/dasd_alias.c +++ b/drivers/s390/block/dasd_alias.c @@ -1,7 +1,7 @@ /* * PAV alias management for the DASD ECKD discipline * |