Staging: line6: fix up NULL assignment mistakes

Should use NULL for a pointer, not 0, otherwise sparse complains.

Cc: Markus Grabner <grabner@icg.tugraz.at>
Cc: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

6 files changed, 15 insertions, 17 deletions

diff --git a/drivers/staging/line6/audio.c b/drivers/staging/line6/audio.c
index d035420c7bfb..37f759a76158 100644
--- a/drivers/staging/line6/audio.c
+++ b/drivers/staging/line6/audio.c
@@ -62,10 +62,10 @@ void line6_cleanup_audio(struct usb_line6 *line6)
 {
         struct snd_card *card = line6->card;
 
-        if(card == 0)
+        if (card == NULL)
                 return;
 
         snd_card_disconnect(card);
         snd_card_free(card);
-        line6->card = 0;
+        line6->card = NULL;
 }
diff --git a/drivers/staging/line6/capture.c b/drivers/staging/line6/capture.c
index a4628bd61cac..d6c1d1a70459 100644
--- a/drivers/staging/line6/capture.c
+++ b/drivers/staging/line6/capture.c
@@ -279,7 +279,7 @@ static int snd_line6_capture_hw_free(struct snd_pcm_substream *substream)
 
         if(line6pcm->buffer_in) {
                 kfree(line6pcm->buffer_in);
-                line6pcm->buffer_in = 0;
+                line6pcm->buffer_in = NULL;
         }
 
         return snd_pcm_lib_free_pages(substream);
diff --git a/drivers/staging/line6/driver.c b/drivers/staging/line6/driver.c
index cf01abcc4676..0484ee60778d 100644
--- a/drivers/staging/line6/driver.c
+++ b/drivers/staging/line6/driver.c
@@ -301,7 +301,7 @@ char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1, int code2, in
 
         if(!buffer) {
                 dev_err(line6->ifcdev, "out of memory\n");
-                return 0;
+                return NULL;
         }
 
         buffer[0] = LINE6_SYSEX_BEGIN;
@@ -469,7 +469,7 @@ int line6_read_data(struct usb_line6 *line6, int address, void *data, size_t dat
         /* query the serial number: */
         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
                                                                                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
-                                                                                                (datalen << 8) | 0x21, address, 0, 0, LINE6_TIMEOUT * HZ);
+                                                                                                (datalen << 8) | 0x21, address, NULL, 0, LINE6_TIMEOUT * HZ);
 
         if(ret < 0) {
                 dev_err(line6->ifcdev, "read request failed (error %d)\n", ret);
@@ -630,8 +630,8 @@ static void line6_list_devices(void)
 static int line6_probe(struct usb_interface *interface, const struct usb_device_id *id)
 {
         int devtype;
-        struct usb_device *usbdev = 0;
-        struct usb_line6 *line6 = 0;
+        struct usb_device *usbdev = NULL;
+        struct usb_line6 *line6 = NULL;
         const struct line6_properties *properties;
         int devnum;
         int interface_number, alternate = 0;
@@ -987,7 +987,7 @@ static void line6_disconnect(struct usb_interface *interface)
 
                 for(i = LINE6_MAX_DEVICES; i--;)
                         if(line6_devices[i] == line6)
-                                line6_devices[i] = 0;
+                                line6_devices[i] = NULL;
         }
 
         line6_destruct(interface);
@@ -1016,13 +1016,13 @@ static int __init line6_init(void)
         printk("%s driver version %s%s\n", DRIVER_NAME, DRIVER_VERSION, DRIVER_REVISION);
         line6_workqueue = create_workqueue(DRIVER_NAME);
 
-        if(line6_workqueue == 0) {
+        if (line6_workqueue == NULL) {
                 err("couldn't create workqueue");
                 return -EINVAL;
         }
 
         for(i = LINE6_MAX_DEVICES; i--;)
-                line6_devices[i] = 0;
+                line6_devices[i] = NULL;
 
         retval = usb_register(&line6_driver);
 
diff --git a/drivers/staging/line6/midibuf.c b/drivers/staging/line6/midibuf.c
index 1f5934e32124..5726bb148a5a 100644
--- a/drivers/staging/line6/midibuf.c
+++ b/drivers/staging/line6/midibuf.c
@@ -44,7 +44,7 @@ int midibuf_init(struct MidiBuffer *this, int size, int split)
 {
         this->buf = (unsigned char *)kmalloc(size, GFP_KERNEL);
 
-        if(this->buf == 0)
+        if (this->buf == NULL)
                 return -ENOMEM;
 
         this->size = size;
@@ -261,8 +261,6 @@ int midibuf_skip_message(struct MidiBuffer *this, unsigned short mask)
 
 void midibuf_destroy(struct MidiBuffer *this)
 {
-        if(this->buf != 0) {
-                kfree(this->buf);
-                this->buf = 0;
-        }
+        kfree(this->buf);
+        this->buf = NULL;
 }
diff --git a/drivers/staging/line6/playback.c b/drivers/staging/line6/playback.c
index c30c627efdd7..34cfbdbb15a2 100644
--- a/drivers/staging/line6/playback.c
+++ b/drivers/staging/line6/playback.c
@@ -329,7 +329,7 @@ static int snd_line6_playback_hw_free(struct snd_pcm_substream *substream)
 
         if(line6pcm->wrap_out) {
                 kfree(line6pcm->wrap_out);
-                line6pcm->wrap_out = 0;
+                line6pcm->wrap_out = NULL;
         }
 
         return snd_pcm_lib_free_pages(substream);
diff --git a/drivers/staging/line6/toneport.c b/drivers/staging/line6/toneport.c
index 041b2c8d1432..d894f4851ef2 100644
--- a/drivers/staging/line6/toneport.c
+++ b/drivers/staging/line6/toneport.c
@@ -117,7 +117,7 @@ static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
         int ret;
         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev,0), 0x67,
                                                                                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
-                                                                                                cmd1, cmd2, 0, 0, LINE6_TIMEOUT * HZ);
+                                                                                                cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);
 
         if(ret < 0)     {
                 err("send failed (error %d)\n", ret);