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authorChristoph Hellwig <hch@lst.de>2017-01-03 15:25:02 +0300
committerJens Axboe <axboe@fb.com>2017-01-27 15:08:35 -0700
commit8ae94eb65be9425af4d57a4f4cfebfdf03081e93 (patch)
tree79ae2a0249299fc20b42dd877bf01390f50a8547 /block/bsg-lib.c
parente9c787e65c0c36529745be47d490d998b4b6e589 (diff)
downloadlinux-0-day-8ae94eb65be9425af4d57a4f4cfebfdf03081e93.tar.gz
block/bsg: move queue creation into bsg_setup_queue
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>
Diffstat (limited to 'block/bsg-lib.c')
-rw-r--r--block/bsg-lib.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/block/bsg-lib.c b/block/bsg-lib.c
index 9d652a9..c74acf4 100644
--- a/block/bsg-lib.c
+++ b/block/bsg-lib.c
@@ -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);