ide-cd: clear sense buffer before issuing request sense
Impact: code simplification
ide_cd_request_sense_fixup() clears the tail of the sense buffer if
the device didn't completely fill it. This patch makes
cdrom_queue_request_sense() clear the sense buffer before issuing the
command instead of clearing it afterwards. This simplifies code and
eases future changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 3d4e099..b6a0d12 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -217,6 +217,8 @@
if (sense == NULL)
sense = &info->sense_data;
+ memset(sense, 0, 18);
+
/* stuff the sense request in front of our current request */
blk_rq_init(NULL, rq);
rq->cmd_type = REQ_TYPE_ATA_PC;
@@ -504,14 +506,8 @@
* and some drives don't send them. Sigh.
*/
if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
- cmd->nleft > 0 && cmd->nleft <= 5) {
- unsigned int ofs = cmd->nbytes - cmd->nleft;
-
- while (cmd->nleft > 0) {
- *((u8 *)rq->data + ofs++) = 0;
- cmd->nleft--;
- }
- }
+ cmd->nleft > 0 && cmd->nleft <= 5)
+ cmd->nleft = 0;
}
int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,