staging/goldfish/goldfish_audio: fix a sparse warning

Fix a pointer check to use NULL instead of 0

Warning:
drivers/staging/goldfish/goldfish_audio.c:300:34: warning: Using plain
integer as NULL pointer

Signed-off-by: Robin Schroer <sulamiification@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/goldfish/goldfish_audio.c b/drivers/staging/goldfish/goldfish_audio.c
index 9df4ad8..c89d0b8 100644 (file)
--- a/drivers/staging/goldfish/goldfish_audio.c
+++ b/drivers/staging/goldfish/goldfish_audio.c
@@ -297,7 +297,7 @@ static int goldfish_audio_probe(struct platform_device *pdev)
        }
        data->buffer_virt = dmam_alloc_coherent(&pdev->dev,
                                COMBINED_BUFFER_SIZE, &buf_addr, GFP_KERNEL);
-       if (data->buffer_virt == 0) {
+       if (data->buffer_virt == NULL) {
                dev_err(&pdev->dev, "allocate buffer failed\n");
                return -ENOMEM;
        }