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author | Takashi Iwai <tiwai@suse.de> | 2017-09-04 14:50:49 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2017-09-04 14:50:49 +0200 |
commit | b06898d119f6b8dba7b318ad73558ce2d39161e8 (patch) | |
tree | df85bc0cd9047202faa6b02ee8ce706f155ba896 /block/bsg-lib.c | |
parent | b24a5f293058b512f1685930f2983a20ee3e15ab (diff) | |
parent | f5fd4a67bef5f2c5c2c9eb0cb2900e12d192ae23 (diff) | |
download | op-kernel-dev-b06898d119f6b8dba7b318ad73558ce2d39161e8.zip op-kernel-dev-b06898d119f6b8dba7b318ad73558ce2d39161e8.tar.gz |
Merge tag 'asoc-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.14
This is quite a large release by volume of patches and diff, a lot of
that is mechanical cleanup patches but it's great to also see a range of
vendors actively working on adding new features and fixing issues in
their drivers. Intel and Realtek have been especially active here.
- Continued work towards moving everything to the component model from
Morimoto-san.
- Use of devres for jack detection GPIOs, eliminating some potential
resource leaks.
- Jack detection support for Qualcomm MSM8916.
- Support for Allwinner H3, Cirrus Logic CS43130, Intel Kabylake
systems with RT5663, Realtek RT274, TI TLV320AIC32x6 and Wolfson
WM8523.
Diffstat (limited to 'block/bsg-lib.c')
-rw-r--r-- | block/bsg-lib.c | 74 |
1 files changed, 44 insertions, 30 deletions
diff --git a/block/bsg-lib.c b/block/bsg-lib.c index c4513b2..dd56d74 100644 --- a/block/bsg-lib.c +++ b/block/bsg-lib.c @@ -29,26 +29,25 @@ #include <scsi/scsi_cmnd.h> /** - * bsg_destroy_job - routine to teardown/delete a bsg job + * bsg_teardown_job - routine to teardown a bsg job * @job: bsg_job that is to be torn down */ -static void bsg_destroy_job(struct kref *kref) +static void bsg_teardown_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, BLK_STS_OK); - put_device(job->dev); /* release reference for the request */ kfree(job->request_payload.sg_list); kfree(job->reply_payload.sg_list); - kfree(job); + + blk_end_request_all(rq, BLK_STS_OK); } void bsg_job_put(struct bsg_job *job) { - kref_put(&job->kref, bsg_destroy_job); + kref_put(&job->kref, bsg_teardown_job); } EXPORT_SYMBOL_GPL(bsg_job_put); @@ -100,7 +99,7 @@ EXPORT_SYMBOL_GPL(bsg_job_done); */ static void bsg_softirq_done(struct request *rq) { - struct bsg_job *job = rq->special; + struct bsg_job *job = blk_mq_rq_to_pdu(rq); bsg_job_put(job); } @@ -122,33 +121,20 @@ static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req) } /** - * bsg_create_job - create the bsg_job structure for the bsg request + * bsg_prepare_job - create the bsg_job structure for the bsg request * @dev: device that is being sent the bsg request * @req: BSG request that needs a job structure */ -static int bsg_create_job(struct device *dev, struct request *req) +static int bsg_prepare_job(struct device *dev, struct request *req) { struct request *rsp = req->next_rq; - struct request_queue *q = req->q; struct scsi_request *rq = scsi_req(req); - struct bsg_job *job; + struct bsg_job *job = blk_mq_rq_to_pdu(req); int ret; - BUG_ON(req->special); - - job = kzalloc(sizeof(struct bsg_job) + q->bsg_job_size, GFP_KERNEL); - if (!job) - return -ENOMEM; - - req->special = job; - job->req = req; - if (q->bsg_job_size) - job->dd_data = (void *)&job[1]; job->request = rq->cmd; job->request_len = rq->cmd_len; - job->reply = rq->sense; - job->reply_len = SCSI_SENSE_BUFFERSIZE; /* Size of sense buffer - * allocated */ + if (req->bio) { ret = bsg_map_buffer(&job->request_payload, req); if (ret) @@ -187,7 +173,6 @@ static void bsg_request_fn(struct request_queue *q) { struct device *dev = q->queuedata; struct request *req; - struct bsg_job *job; int ret; if (!get_device(dev)) @@ -199,7 +184,7 @@ static void bsg_request_fn(struct request_queue *q) break; spin_unlock_irq(q->queue_lock); - ret = bsg_create_job(dev, req); + ret = bsg_prepare_job(dev, req); if (ret) { scsi_req(req)->result = ret; blk_end_request_all(req, BLK_STS_OK); @@ -207,8 +192,7 @@ static void bsg_request_fn(struct request_queue *q) continue; } - job = req->special; - ret = q->bsg_job_fn(job); + ret = q->bsg_job_fn(blk_mq_rq_to_pdu(req)); spin_lock_irq(q->queue_lock); if (ret) break; @@ -219,6 +203,35 @@ static void bsg_request_fn(struct request_queue *q) spin_lock_irq(q->queue_lock); } +static int bsg_init_rq(struct request_queue *q, struct request *req, gfp_t gfp) +{ + struct bsg_job *job = blk_mq_rq_to_pdu(req); + struct scsi_request *sreq = &job->sreq; + + memset(job, 0, sizeof(*job)); + + scsi_req_init(sreq); + sreq->sense_len = SCSI_SENSE_BUFFERSIZE; + sreq->sense = kzalloc(sreq->sense_len, gfp); + if (!sreq->sense) + return -ENOMEM; + + job->req = req; + job->reply = sreq->sense; + job->reply_len = sreq->sense_len; + job->dd_data = job + 1; + + return 0; +} + +static void bsg_exit_rq(struct request_queue *q, struct request *req) +{ + struct bsg_job *job = blk_mq_rq_to_pdu(req); + struct scsi_request *sreq = &job->sreq; + + kfree(sreq->sense); +} + /** * bsg_setup_queue - Create and add the bsg hooks so we can receive requests * @dev: device to attach bsg device to @@ -235,7 +248,9 @@ struct request_queue *bsg_setup_queue(struct device *dev, char *name, q = blk_alloc_queue(GFP_KERNEL); if (!q) return ERR_PTR(-ENOMEM); - q->cmd_size = sizeof(struct scsi_request); + q->cmd_size = sizeof(struct bsg_job) + dd_job_size; + q->init_rq_fn = bsg_init_rq; + q->exit_rq_fn = bsg_exit_rq; q->request_fn = bsg_request_fn; ret = blk_init_allocated_queue(q); @@ -243,7 +258,6 @@ struct request_queue *bsg_setup_queue(struct device *dev, char *name, goto out_cleanup_queue; q->queuedata = dev; - q->bsg_job_size = dd_job_size; q->bsg_job_fn = job_fn; queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q); |