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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-11-18 14:30:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-29 20:25:34 +0100 |
| commit | da191c28f571cae4b470b079394bd4a87e459035 (patch) | |
| tree | 4eaa9f1d4b5a015a8ebf5861d55405a248df47b9 /drivers/char/snsc.c | |
| parent | dd5c472a60e43549d789a17a8444513eec64bd7e (diff) | |
| download | linux-stable-da191c28f571cae4b470b079394bd4a87e459035.tar.gz linux-stable-da191c28f571cae4b470b079394bd4a87e459035.tar.bz2 linux-stable-da191c28f571cae4b470b079394bd4a87e459035.zip | |
snsc: restore IRQs on error path in scdrv_write()
This bug is as old as git. We need to be calling spin_unlock_irqrestore()
instead of regular spin_unlock() here.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/snsc.c')
| -rw-r--r-- | drivers/char/snsc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c index 10e56323f390..ec07f0e99732 100644 --- a/drivers/char/snsc.c +++ b/drivers/char/snsc.c @@ -285,7 +285,7 @@ scdrv_write(struct file *file, const char __user *buf, DECLARE_WAITQUEUE(wait, current); if (file->f_flags & O_NONBLOCK) { - spin_unlock(&sd->sd_wlock); + spin_unlock_irqrestore(&sd->sd_wlock, flags); up(&sd->sd_wbs); return -EAGAIN; } |