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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2008-03-26 12:09:01 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-04-21 09:50:08 +0200 |
| commit | 032d8d90ba23e1770604bbb1102ec77f5aa8ae44 (patch) | |
| tree | 2b10f19df249adc98fe5a6fae5d6a5788406b3be /drivers/cdrom | |
| parent | 3c3f4e012ab3471e8bd19220ed897ae9700e5fdd (diff) | |
| download | lwn-032d8d90ba23e1770604bbb1102ec77f5aa8ae44.tar.gz lwn-032d8d90ba23e1770604bbb1102ec77f5aa8ae44.zip | |
cdrom: protect cdrom_device_info list by mutex
This patch protects the list of cdrom_device_info by cdrom_mutex
when the file in /proc/sys/dev/cdrom/ is written.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/cdrom')
| -rw-r--r-- | drivers/cdrom/cdrom.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index fbcf4b3f8d0e..326ef1b4a4ea 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -3427,6 +3427,7 @@ static void cdrom_update_settings(void) { struct cdrom_device_info *cdi; + mutex_lock(&cdrom_mutex); for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) { if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) cdi->options |= CDO_AUTO_CLOSE; @@ -3445,6 +3446,7 @@ static void cdrom_update_settings(void) else cdi->options &= ~CDO_CHECK_TYPE; } + mutex_unlock(&cdrom_mutex); } static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp, |