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| 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/ch.c | |
| parent | 176aa9d6ee2db582e7e856dbe1983004a82869b4 (diff) | |
| download | lwn-906d15fbd23c1267addab361063c1c8119992215.tar.gz lwn-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/ch.c')
| -rw-r--r-- | drivers/scsi/ch.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index 226ef771efff..4f502f95f3b8 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -616,6 +616,11 @@ static long ch_ioctl(struct file *file, int retval; void __user *argp = (void __user *)arg; + retval = scsi_ioctl_block_when_processing_errors(ch->device, cmd, + file->f_flags & O_NDELAY); + if (retval) + return retval; + switch (cmd) { case CHIOGPARAMS: { |