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scsi: introduce a result field in struct scsi_request

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This passes on the scsi_cmnd result field to users of passthrough
requests.  Currently we abuse req->errors for this purpose, but that
field will go away in its current form.

Note that the old IDE code abuses the errors field in very creative
ways and stores all kinds of different values in it.  I didn't dare
to touch this magic, so the abuses are brought forward 1:1.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig 2017-04-20 16:03:01 +02:00 • committed by Jens Axboe
commit 17d5363b83
31 changed files with 123 additions and 123 deletions
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8
block/bsg-lib.c
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@ -37,7 +37,7 @@ static void bsg_destroy_job(struct kref *kref)
struct bsg_job *job = container_of(kref, struct bsg_job, kref);
struct request *rq = job->req;
blk_end_request_all(rq, rq->errors);
blk_end_request_all(rq, scsi_req(rq)->result);
put_device(job->dev); /* release reference for the request */
@ -74,7 +74,7 @@ void bsg_job_done(struct bsg_job *job, int result,
struct scsi_request *rq = scsi_req(req);
int err;
err = job->req->errors = result;
err = scsi_req(job->req)->result = result;
if (err < 0)
/* we're only returning the result field in the reply */
rq->sense_len = sizeof(u32);
@ -177,7 +177,7 @@ failjob_rls_job:
* @q: request queue to manage
*
* On error the create_bsg_job function should return a -Exyz error value
* that will be set to the req->errors.
* that will be set to ->result.
*
* Drivers/subsys should pass this to the queue init function.
*/
@ -201,7 +201,7 @@ static void bsg_request_fn(struct request_queue *q)
ret = bsg_create_job(dev, req);
if (ret) {
req->errors = ret;
scsi_req(req)->result = ret;
blk_end_request_all(req, ret);
spin_lock_irq(q->queue_lock);
continue;