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| author | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-07 23:27:30 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-07 23:27:30 +0400 |
| commit | a3b072cd180c12e8fe0ece9487b9065808327640 (patch) | |
| tree | 62b982041be84748852d77cdf6ca5639ef40858f /drivers/char/nwbutton.c | |
| parent | 75a1ba5b2c529db60ca49626bcaf0bddf4548438 (diff) | |
| parent | 081cd62a010f97b5bc1d2b0cd123c5abc692b68a (diff) | |
| download | linux-a3b072cd180c12e8fe0ece9487b9065808327640.tar.xz | |
Merge tag 'efi-urgent' into x86/urgent
* Avoid WARN_ON() when mapping BGRT on Baytrail (EFI 32-bit).
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'drivers/char/nwbutton.c')
| -rw-r--r-- | drivers/char/nwbutton.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/char/nwbutton.c b/drivers/char/nwbutton.c index 1fd00dc06897..76c490fa0511 100644 --- a/drivers/char/nwbutton.c +++ b/drivers/char/nwbutton.c @@ -168,7 +168,10 @@ static irqreturn_t button_handler (int irq, void *dev_id) static int button_read (struct file *filp, char __user *buffer, size_t count, loff_t *ppos) { - interruptible_sleep_on (&button_wait_queue); + DEFINE_WAIT(wait); + prepare_to_wait(&button_wait_queue, &wait, TASK_INTERRUPTIBLE); + schedule(); + finish_wait(&button_wait_queue, &wait); return (copy_to_user (buffer, &button_output_buffer, bcount)) ? -EFAULT : bcount; } |