diff options
Diffstat (limited to 'drivers/ide/ide-disk_ioctl.c')
| -rw-r--r-- | drivers/ide/ide-disk_ioctl.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/ide/ide-disk_ioctl.c b/drivers/ide/ide-disk_ioctl.c index 7b783dd7c0be..da36f729ff32 100644 --- a/drivers/ide/ide-disk_ioctl.c +++ b/drivers/ide/ide-disk_ioctl.c @@ -1,9 +1,11 @@ #include <linux/kernel.h> #include <linux/ide.h> #include <linux/hdreg.h> +#include <linux/mutex.h> #include "ide-disk.h" +static DEFINE_MUTEX(ide_disk_ioctl_mutex); static const struct ide_ioctl_devset ide_disk_ioctl_settings[] = { { HDIO_GET_ADDRESS, HDIO_SET_ADDRESS, &ide_devset_address }, { HDIO_GET_MULTCOUNT, HDIO_SET_MULTCOUNT, &ide_devset_multcount }, @@ -18,9 +20,13 @@ int ide_disk_ioctl(ide_drive_t *drive, struct block_device *bdev, fmode_t mode, { int err; + mutex_lock(&ide_disk_ioctl_mutex); err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_disk_ioctl_settings); if (err != -EOPNOTSUPP) - return err; + goto out; - return generic_ide_ioctl(drive, bdev, cmd, arg); + err = generic_ide_ioctl(drive, bdev, cmd, arg); +out: + mutex_unlock(&ide_disk_ioctl_mutex); + return err; } |