staging: vt6655: device_main: Replace NULL comparison with !x

Replace NULL comparison to resolve checkpatch issue.
- x == NULL => !x

Signed-off-by: Namrata A Shettar <namrataashettar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index aea4179dd2d44026b779ca563f78235c460b819b..f109eeac358d86954f5ee8caefc4a0b310725dce 100644 (file)
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -477,7 +477,7 @@ static bool device_init_rings(struct vnt_private *priv)
                                             CB_MAX_BUF_SIZE,
                                             &priv->tx_bufs_dma0,
                                             GFP_ATOMIC);
-       if (priv->tx0_bufs == NULL) {
+       if (!priv->tx0_bufs) {
                dev_err(&priv->pcid->dev, "allocate buf dma memory failed\n");
 
                dma_free_coherent(&priv->pcid->dev,