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| author | Tejun Heo <tj@kernel.org> | 2010-12-08 22:57:40 +0300 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-12-16 19:53:39 +0300 |
| commit | 9f8a2c23c6c1140f515f601265c4dff7522110b7 (patch) | |
| tree | 6defb41e4b129c3772e0c6d40b5e8e9a29bea7f0 /drivers/scsi/sr.h | |
| parent | 638428ece619495edc9579b1e21493eb00f9687c (diff) | |
| download | linux-9f8a2c23c6c1140f515f601265c4dff7522110b7.tar.xz | |
scsi: replace sr_test_unit_ready() with scsi_test_unit_ready()
The usage of TUR has been confusing involving several different
commits updating different parts over time. Currently, the only
differences between scsi_test_unit_ready() and sr_test_unit_ready()
are,
* scsi_test_unit_ready() also sets sdev->changed on NOT_READY.
* scsi_test_unit_ready() returns 0 if TUR ended with UNIT_ATTENTION or
NOT_READY.
Due to the above two differences, sr is using its own
sr_test_unit_ready(), but sd - the sole user of the above extra
handling - doesn't even need them.
Where scsi_test_unit_ready() is used in sd_media_changed(), the code
is looking for device ready w/ media present state which is true iff
TUR succeeds w/o sense data or UA, and when the device is not ready
for whatever reason sd_media_changed() explicitly marks media as
missing so there's no reason to set sdev->changed automatically from
scsi_test_unit_ready() on NOT_READY.
Drop both special handlings from scsi_test_unit_ready(), which makes
it equivalant to sr_test_unit_ready(), and replace
sr_test_unit_ready() with scsi_test_unit_ready(). Also, drop the
unnecessary explicit NOT_READY check from sd_media_changed().
Checking return value is enough for testing device readiness.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/scsi/sr.h')
| -rw-r--r-- | drivers/scsi/sr.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/scsi/sr.h b/drivers/scsi/sr.h index 1e144dfdbd4b..81fbc0b78a52 100644 --- a/drivers/scsi/sr.h +++ b/drivers/scsi/sr.h @@ -61,7 +61,6 @@ int sr_select_speed(struct cdrom_device_info *cdi, int speed); int sr_audio_ioctl(struct cdrom_device_info *, unsigned int, void *); int sr_is_xa(Scsi_CD *); -int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr); /* sr_vendor.c */ void sr_vendor_init(Scsi_CD *); |