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block/bsg: move queue creation into bsg_setup_queue

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Simply the boilerplate code needed for bsg nodes a bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2017-01-03 15:25:02 +03:00
committed by Jens Axboe
parent e9c787e65c
commit 8ae94eb65b
4 changed files with 25 additions and 52 deletions
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21
block/bsg-lib.c
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@@ -177,7 +177,7 @@ failjob_rls_job:
*
* Drivers/subsys should pass this to the queue init function.
*/
void bsg_request_fn(struct request_queue *q)
static void bsg_request_fn(struct request_queue *q)
__releases(q->queue_lock)
__acquires(q->queue_lock)
{
@@ -214,24 +214,24 @@ void bsg_request_fn(struct request_queue *q)
put_device(dev);
spin_lock_irq(q->queue_lock);
}
EXPORT_SYMBOL_GPL(bsg_request_fn);
/**
* bsg_setup_queue - Create and add the bsg hooks so we can receive requests
* @dev: device to attach bsg device to
* @q: request queue setup by caller
* @name: device to give bsg device
* @job_fn: bsg job handler
* @dd_job_size: size of LLD data needed for each job
*
* The caller should have setup the reuqest queue with bsg_request_fn
* as the request_fn.
*/
int bsg_setup_queue(struct device *dev, struct request_queue *q,
char *name, bsg_job_fn *job_fn, int dd_job_size)
struct request_queue *bsg_setup_queue(struct device *dev, char *name,
bsg_job_fn *job_fn, int dd_job_size)
{
struct request_queue *q;
int ret;
q = blk_init_queue(bsg_request_fn, NULL);
if (!q)
return ERR_PTR(-ENOMEM);
q->queuedata = dev;
q->bsg_job_size = dd_job_size;
q->bsg_job_fn = job_fn;
@@ -243,9 +243,10 @@ int bsg_setup_queue(struct device *dev, struct request_queue *q,
if (ret) {
printk(KERN_ERR "%s: bsg interface failed to "
"initialize - register queue\n", dev->kobj.name);
return ret;
blk_cleanup_queue(q);
return ERR_PTR(ret);
}
return 0;
return q;
}
EXPORT_SYMBOL_GPL(bsg_setup_queue);