bcache: Use PTR_ERR_OR_ZERO()

Fix ptr_ret.cocci warnings:
drivers/md/bcache/btree.c:1800:1-3: WARNING: PTR_ERR_OR_ZERO can be used

Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com>
Reviewed-by: Michael Lyle <mlyle@lyle.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index ebb1874218e79a77eba7943eb62f1045f08af932..9e30713dbdb8db34bda5cf8565acfc7767bc97d3 100644 (file)
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -1804,10 +1804,7 @@ static int bch_gc_thread(void *arg)
 int bch_gc_thread_start(struct cache_set *c)
 {
        c->gc_thread = kthread_run(bch_gc_thread, c, "bcache_gc");
-       if (IS_ERR(c->gc_thread))
-               return PTR_ERR(c->gc_thread);
-
-       return 0;
+       return PTR_ERR_OR_ZERO(c->gc_thread);
 }
 
 /* Initial partial gc */