From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Wed, 4 Mar 2015 19:15:33 +0000 (-0700)
Subject: staging: comedi: mite: (!foo) preferred over (foo == NULL)
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5effdf708100fd5eeeaa8c7bbbed3b90cbb70cf5;p=linux-beck.git

staging: comedi: mite: (!foo) preferred over (foo == NULL)

Also, clarify the 'ring' allocation failure by returning NULL instead
of 'ring' (which would be NULL).

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/comedi/drivers/mite.c b/drivers/staging/comedi/drivers/mite.c
index 1e537a5cf862..79b5597db1a1 100644
--- a/drivers/staging/comedi/drivers/mite.c
+++ b/drivers/staging/comedi/drivers/mite.c
@@ -186,10 +186,10 @@ struct mite_dma_descriptor_ring *mite_alloc_ring(struct mite_struct *mite)
 	struct mite_dma_descriptor_ring *ring =
 	    kmalloc(sizeof(struct mite_dma_descriptor_ring), GFP_KERNEL);
 
-	if (ring == NULL)
-		return ring;
+	if (!ring)
+		return NULL;
 	ring->hw_dev = get_device(&mite->pcidev->dev);
-	if (ring->hw_dev == NULL) {
+	if (!ring->hw_dev) {
 		kfree(ring);
 		return NULL;
 	}