diff options
| author | Christoph Hellwig <hch@lst.de> | 2014-10-11 16:25:31 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-11-12 11:16:11 +0100 |
| commit | 906d15fbd23c1267addab361063c1c8119992215 (patch) | |
| tree | 419ba148925c3651fe9337af24a932097e2c3d8a /drivers/scsi/sr.c | |
| parent | scsi: refactor scsi_reset_provider handling (diff) | |
| download | linux-906d15fbd23c1267addab361063c1c8119992215.tar.xz linux-906d15fbd23c1267addab361063c1c8119992215.zip | |
scsi: split scsi_nonblockable_ioctl
The calling conventions for this function are bad as it could return
-ENODEV both for a device not currently online and a not recognized ioctl.
Add a new scsi_ioctl_block_when_processing_errors function that wraps
scsi_block_when_processing_errors with the a special case for the
SG_SCSI_RESET ioctl command, and handle the SG_SCSI_RESET case itself
in scsi_ioctl. All callers of scsi_ioctl now must call the above helper
to check for the EH state, so that the ioctl handler itself doesn't
have to.
Reported-by: Robert Elliott <Elliott@hp.com>
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/sr.c')
| -rw-r--r-- | drivers/scsi/sr.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 2de44cc58b1a..3d5399e341af 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -549,6 +549,11 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, mutex_lock(&sr_mutex); + ret = scsi_ioctl_block_when_processing_errors(sdev, cmd, + (mode & FMODE_NDELAY) != 0); + if (ret) + goto out; + /* * Send SCSI addressing ioctls directly to mid level, send other * ioctls to cdrom/block level. @@ -564,16 +569,6 @@ static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, if (ret != -ENOSYS) goto out; - /* - * ENODEV means that we didn't recognise the ioctl, or that we - * cannot execute it in the current device state. In either - * case fall through to scsi_ioctl, which will return ENDOEV again - * if it doesn't recognise the ioctl - */ - ret = scsi_nonblockable_ioctl(sdev, cmd, argp, - (mode & FMODE_NDELAY) != 0); - if (ret != -ENODEV) - goto out; ret = scsi_ioctl(sdev, cmd, argp); out: |