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authorChristoph Hellwig <hch@lst.de>2014-10-24 20:39:37 +0400
committerChristoph Hellwig <hch@lst.de>2014-11-12 13:16:11 +0300
commit21a9d4c9d6c6bb22dffad67cb82f0037859262b7 (patch)
tree585ee1325975aecd0cc52318e4ce7b857a1d5137 /drivers/scsi/sd.c
parent906d15fbd23c1267addab361063c1c8119992215 (diff)
downloadlinux-21a9d4c9d6c6bb22dffad67cb82f0037859262b7.tar.xz
sd: fix up ->compat_ioctl
No need to verify the passthrough ioctls, the real handler will take care of that. Also make sure not to block for resets on O_NONBLOCK fds. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c28
1 files changed, 8 insertions, 20 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index ddf763ad3b83..b041eca8955d 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1541,31 +1541,19 @@ static int sd_compat_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
struct scsi_device *sdev = scsi_disk(bdev->bd_disk)->device;
- int ret;
-
- ret = scsi_verify_blk_ioctl(bdev, cmd);
- if (ret < 0)
- return ret;
+ int error;
- /*
- * If we are in the middle of error recovery, don't let anyone
- * else try and use this device. Also, if error recovery fails, it
- * may try and take the device offline, in which case all further
- * access to the device is prohibited.
- */
- if (!scsi_block_when_processing_errors(sdev))
- return -ENODEV;
+ error = scsi_ioctl_block_when_processing_errors(sdev, cmd,
+ (mode & FMODE_NDELAY) != 0);
+ if (error)
+ return error;
- if (sdev->host->hostt->compat_ioctl) {
- ret = sdev->host->hostt->compat_ioctl(sdev, cmd, (void __user *)arg);
-
- return ret;
- }
-
/*
* Let the static ioctl translation table take care of it.
*/
- return -ENOIOCTLCMD;
+ if (!sdev->host->hostt->compat_ioctl)
+ return -ENOIOCTLCMD;
+ return sdev->host->hostt->compat_ioctl(sdev, cmd, (void __user *)arg);
}
#endif