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| author | Simon Arlott <simon@fire.lp0.eu> | 2011-02-09 14:21:07 +0100 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-02-09 14:22:37 +0100 |
| commit | b8cf0e0e552ca48e9a00f518aeb4f5e03984022b (patch) | |
| tree | 83787d1d9b21764cc7685311bcd99ccdb3be2db8 /drivers/cdrom | |
| parent | 02a8f01b5a9f396d0327977af4c232d0f94c45fd (diff) | |
| download | lwn-b8cf0e0e552ca48e9a00f518aeb4f5e03984022b.tar.gz lwn-b8cf0e0e552ca48e9a00f518aeb4f5e03984022b.zip | |
cdrom: support devices that have check_events but not media_changed
Commit 93aae17af1172c40c6f74b7294e93a90c3cfaa5d ("sr: implement
sr_check_events()") replaced the media_changed op with the
check_events op in drivers/scsi/sr.c
All users that check for the CDC_MEDIA_CHANGED capbility try both
the check_events op and the media_changed op, but register_cdrom()
was requiring media_changed.
This patch fixes the capability checking.
The cdrom_select_disc ioctl is also using the two operations, so
they should be required for CDC_SELECT_DISC too.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Cc: Tejun Heo <tj@kernel.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Tested-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/cdrom')
| -rw-r--r-- | drivers/cdrom/cdrom.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 14033a36bcd0..e2c48a7eccff 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -409,7 +409,8 @@ int register_cdrom(struct cdrom_device_info *cdi) } ENSURE(drive_status, CDC_DRIVE_STATUS ); - ENSURE(media_changed, CDC_MEDIA_CHANGED); + if (cdo->check_events == NULL && cdo->media_changed == NULL) + *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC); ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY); ENSURE(lock_door, CDC_LOCK); ENSURE(select_speed, CDC_SELECT_SPEED); |