diff options
| author | Tejun Heo <tj@kernel.org> | 2011-11-21 21:32:22 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-11-21 21:32:22 +0100 |
| commit | 3a7cbd50f74907580eb47a8d08e1f29741b81abf (patch) | |
| tree | 515b7d9b9fa85c20ecf6779d563371b666a8b991 /drivers | |
| parent | freezer: fix current->state restoration race in refrigerator() (diff) | |
| download | linux-3a7cbd50f74907580eb47a8d08e1f29741b81abf.tar.xz linux-3a7cbd50f74907580eb47a8d08e1f29741b81abf.zip | |
freezer: don't unnecessarily set PF_NOFREEZE explicitly
Some drivers set PF_NOFREEZE in their kthread functions which is
completely unnecessary and racy - some part of freezer code doesn't
consider cases where PF_NOFREEZE is set asynchronous to freezer
operations.
In general, there's no reason to allow setting PF_NOFREEZE explicitly.
Remove them and change the documentation to note that setting
PF_NOFREEZE directly isn't allowed.
-v2: Dropped change to twl4030-irq.c as it no longer uses PF_NOFREEZE.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: "Gustavo F. Padovan" <padovan@profusion.mobi>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: wwang <wei_wang@realsil.com.cn>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/bluetooth/btmrvl_main.c | 2 | ||||
| -rw-r--r-- | drivers/mfd/twl6030-irq.c | 2 | ||||
| -rw-r--r-- | drivers/staging/rts_pstor/rtsx.c | 2 |
3 files changed, 0 insertions, 6 deletions
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index a88a78c86162..6c3defa50845 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -475,8 +475,6 @@ static int btmrvl_service_main_thread(void *data) init_waitqueue_entry(&wait, current); - current->flags |= PF_NOFREEZE; - for (;;) { add_wait_queue(&thread->wait_q, &wait); diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c index 3eee45ffb096..c6b456ad7342 100644 --- a/drivers/mfd/twl6030-irq.c +++ b/drivers/mfd/twl6030-irq.c @@ -138,8 +138,6 @@ static int twl6030_irq_thread(void *data) static const unsigned max_i2c_errors = 100; int ret; - current->flags |= PF_NOFREEZE; - while (!kthread_should_stop()) { int i; union { diff --git a/drivers/staging/rts_pstor/rtsx.c b/drivers/staging/rts_pstor/rtsx.c index 480b0ed2e4de..8a7803cf88d2 100644 --- a/drivers/staging/rts_pstor/rtsx.c +++ b/drivers/staging/rts_pstor/rtsx.c @@ -466,8 +466,6 @@ static int rtsx_control_thread(void *__dev) struct rtsx_chip *chip = dev->chip; struct Scsi_Host *host = rtsx_to_host(dev); - current->flags |= PF_NOFREEZE; - for (;;) { if (wait_for_completion_interruptible(&dev->cmnd_ready)) break; |