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[SCSI] sd: remove command-size switching code 

This patch (as1138) removes from sd.c some old code for switching from
10-byte commands to 6-byte commands.  This code is redundant -- the
switching for READ and WRITE is already handled in
scsi_io_completion() and the switching for MODE SENSE is already
handled in scsi_mode_sense().  (There is no comparable switch for MODE
SELECT, but I doubt one is needed.)

Furthermore the other handlers do a better job; they check for
appropriate ASC and ASCQ values before blindly switching the size.
The code in sd.c is known to cause problems with some devices by
switching when it shouldn't.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Alan Stern 2008-10-10 16:03:20 -04:00 committed by James Bottomley
parent 36a529202b
commit d4c9b73608
1 changed files with 0 additions and 9 deletions
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9
drivers/scsi/sd.c
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@ -1084,15 +1084,6 @@ static int sd_done(struct scsi_cmnd *SCpnt)
scsi_print_sense("sd", SCpnt);
good_bytes = sd_completed_bytes(SCpnt);
}
if (!scsi_device_protection(SCpnt->device) &&
SCpnt->device->use_10_for_rw &&
(SCpnt->cmnd[0] == READ_10 ||
SCpnt->cmnd[0] == WRITE_10))
SCpnt->device->use_10_for_rw = 0;
if (SCpnt->device->use_10_for_ms &&
(SCpnt->cmnd[0] == MODE_SENSE_10 ||
SCpnt->cmnd[0] == MODE_SELECT_10))
SCpnt->device->use_10_for_ms = 0;
break;
default:
break;