staging/line6: Fix sparse warning 'Using plain integer as NULL pointer'

This patch fixes the warning generated by sparse: "Using plain integer
as NULL pointer" by replacing the offending 0s with NULL.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/line6/capture.c b/drivers/staging/line6/capture.c
index 1e3bb14..9647154 100644 (file)
--- a/drivers/staging/line6/capture.c
+++ b/drivers/staging/line6/capture.c
@@ -147,7 +147,7 @@ void line6_capture_copy(struct snd_line6_pcm *line6pcm, char *fbuf, int fsize)
        const int bytes_per_frame = line6pcm->properties->bytes_per_frame;
        int frames = fsize / bytes_per_frame;
 
-       if (runtime == 0)
+       if (runtime == NULL)
                return;
 
        if (line6pcm->pos_in_done + frames > runtime->buffer_size) {

diff --git a/drivers/staging/line6/midi.c b/drivers/staging/line6/midi.c
index ab67e88..e554a2d 100644 (file)
--- a/drivers/staging/line6/midi.c
+++ b/drivers/staging/line6/midi.c
@@ -127,7 +127,7 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data,
 
        urb = usb_alloc_urb(0, GFP_ATOMIC);
 
-       if (urb == 0) {
+       if (urb == NULL) {
                dev_err(line6->ifcdev, "Out of memory\n");
                return -ENOMEM;
        }
@@ -137,7 +137,7 @@ static int send_midi_async(struct usb_line6 *line6, unsigned char *data,
 
        transfer_buffer = kmalloc(length, GFP_ATOMIC);
 
-       if (transfer_buffer == 0) {
+       if (transfer_buffer == NULL) {
                usb_free_urb(urb);
                dev_err(line6->ifcdev, "Out of memory\n");
                return -ENOMEM;

diff --git a/drivers/staging/line6/playback.c b/drivers/staging/line6/playback.c
index 29940fd..10c5438 100644 (file)
--- a/drivers/staging/line6/playback.c
+++ b/drivers/staging/line6/playback.c
@@ -246,7 +246,7 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
 
        change_volume(urb_out, line6pcm->volume_playback, bytes_per_frame);
 
-       if (line6pcm->prev_fbuf != 0) {
+       if (line6pcm->prev_fbuf != NULL) {
 #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
                if (line6pcm->flags & MASK_PCM_IMPULSE) {
                        create_impulse_test_signal(line6pcm, urb_out,