block: misc updates to blk_get_queue()
* blk_get_queue() is peculiar in that it returns 0 on success and 1 on
failure instead of 0 / -errno or boolean. Update it such that it
returns %true on success and %false on failure.
* Make sure the caller checks for the return value.
* Separate out __blk_get_queue() which doesn't check whether @q is
dead and put it in blk.h. This will be used later.
This patch doesn't introduce any functional changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/bsg.c b/block/bsg.c
index 702f131..167d586 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -769,12 +769,10 @@
struct file *file)
{
struct bsg_device *bd;
- int ret;
#ifdef BSG_DEBUG
unsigned char buf[32];
#endif
- ret = blk_get_queue(rq);
- if (ret)
+ if (!blk_get_queue(rq))
return ERR_PTR(-ENXIO);
bd = bsg_alloc_device();