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| author | Robert Jennings <rcj@linux.vnet.ibm.com> | 2010-10-11 11:02:00 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-10-25 15:12:51 -0500 |
| commit | b8479178901557dc323a69ee254c1c732e85e0e5 (patch) | |
| tree | 12c9de98d53c6a17074dc6fff0ec4d43be11acca /drivers | |
| parent | 0ee31cb5df4b717de923266879964d0418c3308f (diff) | |
| download | lwn-b8479178901557dc323a69ee254c1c732e85e0e5.tar.gz lwn-b8479178901557dc323a69ee254c1c732e85e0e5.zip | |
[SCSI] sr: fix sr_drive_status handling when initialization required
An sr device that reports sense data with SK/ASC/ASCQ of 2/4/2 (Not ready,
Logical unit not ready, Initializing command required) will be handled
in sr_drive_status as (2/4/!1) and assumed to be a 'format in progress'
which returns CDS_DISC_OK. The drive will not be made ready in this case.
Prior to 210ba1d1724f5c4ed87a2ab1a21ca861a915f734 sr_drive_status would
have returned CDS_TRAY_OPEN and this results in an START_STOP_UNIT to
close the tray, which resolves the initialization requirement.
This patch adds handling for SK/ASC/ASCQ of 2/4/2 where it will return
CDS_TRAY_OPEN as a means of triggering a START_STOP_UNIT.
This issue is seen on the IBM POWER platform when using a file-backed,
virtual optical device. The device does not support media queries
through the Get Event Status Notification command which could otherwise
trigger a START_STOP_UNIT call to close an open tray.
Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/sr_ioctl.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index cbb38c5197fa..3cd8ffbad577 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -325,6 +325,15 @@ int sr_drive_status(struct cdrom_device_info *cdi, int slot) } /* + * SK/ASC/ASCQ of 2/4/2 means "initialization required" + * Using CD_TRAY_OPEN results in an START_STOP_UNIT to close + * the tray, which resolves the initialization requirement. + */ + if (scsi_sense_valid(&sshdr) && sshdr.sense_key == NOT_READY + && sshdr.asc == 0x04 && sshdr.ascq == 0x02) + return CDS_TRAY_OPEN; + + /* * 0x04 is format in progress .. but there must be a disc present! */ if (sshdr.sense_key == NOT_READY && sshdr.asc == 0x04) |