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scsi: sr: Use scsi_cmd_to_rq() instead of scsi_cmnd.request

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Prepare for removal of the request pointer by using scsi_cmd_to_rq()
instead. This patch does not change any functionality.

Link: https://lore.kernel.org/r/20210809230355.8186-5-bvanassche@acm.org
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2021-08-09 16:03:07 -07:00 committed by Martin K. Petersen
parent 5999ccff0f
commit c4deb5b5dd
1 changed files with 6 additions and 7 deletions
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13
drivers/scsi/sr.c
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@ -331,7 +331,8 @@ static int sr_done(struct scsi_cmnd *SCpnt)
int good_bytes = (result == 0 ? this_count : 0);
int block_sectors = 0;
long error_sector;
struct scsi_cd *cd = scsi_cd(SCpnt->request->rq_disk);
struct request *rq = scsi_cmd_to_rq(SCpnt);
struct scsi_cd *cd = scsi_cd(rq->rq_disk);
#ifdef DEBUG
scmd_printk(KERN_INFO, SCpnt, "done: %x\n", result);
@ -353,16 +354,14 @@ static int sr_done(struct scsi_cmnd *SCpnt)
break;
error_sector =
get_unaligned_be32(&SCpnt->sense_buffer[3]);
if (SCpnt->request->bio != NULL)
block_sectors =
bio_sectors(SCpnt->request->bio);
if (rq->bio != NULL)
block_sectors = bio_sectors(rq->bio);
if (block_sectors < 4)
block_sectors = 4;
if (cd->device->sector_size == 2048)
error_sector <<= 2;
error_sector &= ~(block_sectors - 1);
good_bytes = (error_sector -
blk_rq_pos(SCpnt->request)) << 9;
good_bytes = (error_sector - blk_rq_pos(rq)) << 9;
if (good_bytes < 0 || good_bytes >= this_count)
good_bytes = 0;
/*
@ -394,7 +393,7 @@ static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt)
{
int block = 0, this_count, s_size;
struct scsi_cd *cd;
struct request *rq = SCpnt->request;
struct request *rq = scsi_cmd_to_rq(SCpnt);
blk_status_t ret;
ret = scsi_alloc_sgtables(SCpnt);