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Commit 032d8d90 authored by Akinobu Mita's avatar Akinobu Mita Committed by Jens Axboe
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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: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 3c3f4e01

drivers/cdrom/cdrom.c

+2 −0
Original line number Diff line number Diff line
@@ -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,