Staging: media: Use !x in place of NULL comparision

Test for NULL as !x instead of NULL comparisions for
functions that return NULL on failure.
Issue found using coccinelle
Semantic patch used to solve the problem is as follows

// <smpl>
@@
expression x;
statement S;
@@

x = (\(kmalloc\|devm_kzalloc\|kmalloc_array\|devm_ioremap\|
usb_alloc_urb\|alloc_netdev\|dev_alloc_skb\)(...));

-if(x==NULL)
+if(!x)
// </smpl>

Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/media/zoran/zoran_driver.c b/drivers/staging/media/zoran/zoran_driver.c
index 04f88f9d6bb42c708d5ee7093c50bf9fbb0e2d1c..0a99e16e5bd5e568fe4fdcc8733eebda280c0d7c 100644 (file)
--- a/drivers/staging/media/zoran/zoran_driver.c
+++ b/drivers/staging/media/zoran/zoran_driver.c
@@ -332,7 +332,7 @@ static int jpg_fbuffer_alloc(struct zoran_fh *fh)
 
                if (fh->buffers.need_contiguous) {
                        mem = kmalloc(fh->buffers.buffer_size, GFP_KERNEL);
-                       if (mem == NULL) {
+                       if (!mem) {
                                dprintk(1,
                                        KERN_ERR
                                        "%s: %s - kmalloc failed for buffer %d\n",