V4L/DVB (4288): Clean out a zillion sparse warnings in pvrusb2

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

19 files changed, 105 insertions, 105 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-audio.c b/drivers/media/video/pvrusb2/pvrusb2-audio.c
index 313d2dcf9e4b..9846c464ec80 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-audio.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-audio.c
@@ -145,8 +145,8 @@ static int get_audio_status(struct pvr2_msp3400_handler *ctxt)
 
 static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt)
 {
-        ctxt->client->handler = 0;
-        ctxt->hdw->audio_stat = 0;
+        ctxt->client->handler = NULL;
+        ctxt->hdw->audio_stat = NULL;
         kfree(ctxt);
 }
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-context.c b/drivers/media/video/pvrusb2/pvrusb2-context.c
index 40dc59871a45..f129f316d20e 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-context.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-context.c
@@ -77,7 +77,7 @@ struct pvr2_context *pvr2_context_create(
         const struct usb_device_id *devid,
         void (*setup_func)(struct pvr2_context *))
 {
-        struct pvr2_context *mp = 0;
+        struct pvr2_context *mp = NULL;
         mp = kmalloc(sizeof(*mp),GFP_KERNEL);
         if (!mp) goto done;
         memset(mp,0,sizeof(*mp));
@@ -87,7 +87,7 @@ struct pvr2_context *pvr2_context_create(
         mp->hdw = pvr2_hdw_create(intf,devid);
         if (!mp->hdw) {
                 pvr2_context_destroy(mp);
-                mp = 0;
+                mp = NULL;
                 goto done;
         }
 
@@ -145,7 +145,7 @@ void pvr2_channel_init(struct pvr2_channel *cp,struct pvr2_context *mp)
 {
         cp->hdw = mp->hdw;
         cp->mc_head = mp;
-        cp->mc_next = 0;
+        cp->mc_next = NULL;
         cp->mc_prev = mp->mc_last;
         if (mp->mc_last) {
                 mp->mc_last->mc_next = cp;
@@ -160,8 +160,8 @@ static void pvr2_channel_disclaim_stream(struct pvr2_channel *cp)
 {
         if (!cp->stream) return;
         pvr2_stream_kill(cp->stream->stream);
-        cp->stream->user = 0;
-        cp->stream = 0;
+        cp->stream->user = NULL;
+        cp->stream = NULL;
 }
 
 
@@ -179,7 +179,7 @@ void pvr2_channel_done(struct pvr2_channel *cp)
         } else {
                 mp->mc_first = cp->mc_next;
         }
-        cp->hdw = 0;
+        cp->hdw = NULL;
 }
 
 
@@ -212,7 +212,7 @@ struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
 {
         struct pvr2_ioread *cp;
         cp = pvr2_ioread_create();
-        if (!cp) return 0;
+        if (!cp) return NULL;
         pvr2_ioread_setup(cp,sp->stream);
         pvr2_ioread_set_sync_key(cp,stream_sync_key,sizeof(stream_sync_key));
         return cp;
diff --git a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c
index d5df9fbeba2f..fb6198f1df98 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c
@@ -158,7 +158,7 @@ int pvr2_ctrl_get_mask(struct pvr2_ctrl *cptr)
 /* Retrieve the control's name */
 const char *pvr2_ctrl_get_name(struct pvr2_ctrl *cptr)
 {
-        if (!cptr) return 0;
+        if (!cptr) return NULL;
         return cptr->info->name;
 }
 
@@ -166,7 +166,7 @@ const char *pvr2_ctrl_get_name(struct pvr2_ctrl *cptr)
 /* Retrieve the control's desc */
 const char *pvr2_ctrl_get_desc(struct pvr2_ctrl *cptr)
 {
-        if (!cptr) return 0;
+        if (!cptr) return NULL;
         return cptr->info->desc;
 }
 
@@ -488,7 +488,7 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr,
 
         LOCK_TAKE(cptr->hdw->big_lock); do {
                 if (cptr->info->type == pvr2_ctl_int) {
-                        ret = parse_token(ptr,len,valptr,0,0);
+                        ret = parse_token(ptr,len,valptr,NULL,0);
                         if ((ret >= 0) &&
                             ((*valptr < cptr->info->def.type_int.min_value) ||
                              (*valptr > cptr->info->def.type_int.max_value))) {
diff --git a/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c b/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
index 27eadaff75a0..c80c26be6e4d 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
@@ -139,8 +139,8 @@ static const struct pvr2_v4l_cx2584x_ops decoder_ops[] = {
 
 static void decoder_detach(struct pvr2_v4l_cx2584x *ctxt)
 {
-        ctxt->client->handler = 0;
-        ctxt->hdw->decoder_ctrl = 0;
+        ctxt->client->handler = NULL;
+        ctxt->hdw->decoder_ctrl = NULL;
         kfree(ctxt);
 }
 
@@ -221,7 +221,7 @@ static unsigned int decoder_describe(struct pvr2_v4l_cx2584x *ctxt,
 static void decoder_reset(struct pvr2_v4l_cx2584x *ctxt)
 {
         int ret;
-        ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_RESET,0);
+        ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_RESET,NULL);
         pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx25840 decoder_reset (ret=%d)",ret);
 }
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-debugifc.c b/drivers/media/video/pvrusb2/pvrusb2-debugifc.c
index 8092b239cf27..f985f00d885a 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-debugifc.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-debugifc.c
@@ -82,7 +82,7 @@ static unsigned int debugifc_isolate_word(const char *buf,unsigned int count,
         unsigned int wlen;
         unsigned int scnt;
 
-        wptr = 0;
+        wptr = NULL;
         wlen = 0;
         scnt = debugifc_count_whitespace(buf,count);
         consume_cnt += scnt; count -= scnt; buf += scnt;
diff --git a/drivers/media/video/pvrusb2/pvrusb2-eeprom.c b/drivers/media/video/pvrusb2/pvrusb2-eeprom.c
index 94d383ff9889..6cff8e75f426 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-eeprom.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-eeprom.c
@@ -58,7 +58,7 @@ static u8 *pvr2_eeprom_fetch(struct pvr2_hdw *hdw)
                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
                            "Failed to allocate memory"
                            " required to read eeprom");
-                return 0;
+                return NULL;
         }
 
         trace_eeprom("Value for eeprom addr from controller was 0x%x",
@@ -108,7 +108,7 @@ static u8 *pvr2_eeprom_fetch(struct pvr2_hdw *hdw)
                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
                                    "eeprom fetch set offs err=%d",ret);
                         kfree(eeprom);
-                        return 0;
+                        return NULL;
                 }
         }
         return eeprom;
diff --git a/drivers/media/video/pvrusb2/pvrusb2-encoder.c b/drivers/media/video/pvrusb2/pvrusb2-encoder.c
index 2cc31695b435..18a7073501c6 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-encoder.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-encoder.c
@@ -65,7 +65,7 @@ static int pvr2_encoder_write_words(struct pvr2_hdw *hdw,
                 }
                 ret = pvr2_send_request(hdw,
                                         hdw->cmd_buffer,1+(chunkCnt*7),
-                                        0,0);
+                                        NULL,0);
                 if (ret) return ret;
                 data += chunkCnt;
                 dlen -= chunkCnt;
@@ -322,7 +322,7 @@ int pvr2_encoder_configure(struct pvr2_hdw *hdw)
         }
 
         ret = cx2341x_update(hdw,pvr2_encoder_cmd,
-                             (hdw->enc_cur_valid ? &hdw->enc_cur_state : 0),
+                             (hdw->enc_cur_valid ? &hdw->enc_cur_state : NULL),
                              &hdw->enc_ctl_state);
         if (ret) {
                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 9638591cc06f..9b48abcf6089 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -87,7 +87,7 @@ static struct pvr2_string_table pvr2_client_lists[] = {
 #endif
 };
 
-static struct pvr2_hdw *unit_pointers[PVR_NUM] = {[ 0 ... PVR_NUM-1 ] = 0};
+static struct pvr2_hdw *unit_pointers[PVR_NUM] = {[ 0 ... PVR_NUM-1 ] = NULL};
 static DECLARE_MUTEX(pvr2_unit_sem);
 
 static int ctlchg = 0;
@@ -422,7 +422,7 @@ static unsigned int ctrl_cx2341x_getv4lflags(struct pvr2_ctrl *cptr)
         info = (struct pvr2_ctl_info *)(cptr->info);
         if (qctrl.flags & V4L2_CTRL_FLAG_READ_ONLY) {
                 if (info->set_value) {
-                        info->set_value = 0;
+                        info->set_value = NULL;
                 }
         } else {
                 if (!(info->set_value)) {
@@ -928,7 +928,7 @@ static int pvr2_locate_firmware(struct pvr2_hdw *hdw,
  */
 static int pvr2_upload_firmware1(struct pvr2_hdw *hdw)
 {
-        const struct firmware *fw_entry = 0;
+        const struct firmware *fw_entry = NULL;
         void  *fw_ptr;
         unsigned int pipe;
         int ret;
@@ -1024,7 +1024,7 @@ static int pvr2_upload_firmware1(struct pvr2_hdw *hdw)
 
 int pvr2_upload_firmware2(struct pvr2_hdw *hdw)
 {
-        const struct firmware *fw_entry = 0;
+        const struct firmware *fw_entry = NULL;
         void  *fw_ptr;
         unsigned int pipe, fw_len, fw_done;
         int actual_length;
@@ -1739,7 +1739,7 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
             sizeof(pvr2_device_names)/sizeof(pvr2_device_names[0])) {
                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
                            "Bogus device type of %u reported",hdw_type);
-                return 0;
+                return NULL;
         }
 
         hdw = kmalloc(sizeof(*hdw),GFP_KERNEL);
@@ -1920,7 +1920,7 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
                 if (hdw->mpeg_ctrl_info) kfree(hdw->mpeg_ctrl_info);
                 kfree(hdw);
         }
-        return 0;
+        return NULL;
 }
 
 
@@ -1933,25 +1933,25 @@ static void pvr2_hdw_remove_usb_stuff(struct pvr2_hdw *hdw)
         if (hdw->ctl_read_urb) {
                 usb_kill_urb(hdw->ctl_read_urb);
                 usb_free_urb(hdw->ctl_read_urb);
-                hdw->ctl_read_urb = 0;
+                hdw->ctl_read_urb = NULL;
         }
         if (hdw->ctl_write_urb) {
                 usb_kill_urb(hdw->ctl_write_urb);
                 usb_free_urb(hdw->ctl_write_urb);
-                hdw->ctl_write_urb = 0;
+                hdw->ctl_write_urb = NULL;
         }
         if (hdw->ctl_read_buffer) {
                 kfree(hdw->ctl_read_buffer);
-                hdw->ctl_read_buffer = 0;
+                hdw->ctl_read_buffer = NULL;
         }
         if (hdw->ctl_write_buffer) {
                 kfree(hdw->ctl_write_buffer);
-                hdw->ctl_write_buffer = 0;
+                hdw->ctl_write_buffer = NULL;
         }
         pvr2_hdw_render_useless_unlocked(hdw);
         hdw->flag_disconnected = !0;
-        hdw->usb_dev = 0;
-        hdw->usb_intf = 0;
+        hdw->usb_dev = NULL;
+        hdw->usb_intf = NULL;
 }
 
 
@@ -1961,11 +1961,11 @@ void pvr2_hdw_destroy(struct pvr2_hdw *hdw)
         pvr2_trace(PVR2_TRACE_INIT,"pvr2_hdw_destroy: hdw=%p",hdw);
         if (hdw->fw_buffer) {
                 kfree(hdw->fw_buffer);
-                hdw->fw_buffer = 0;
+                hdw->fw_buffer = NULL;
         }
         if (hdw->vid_stream) {
                 pvr2_stream_destroy(hdw->vid_stream);
-                hdw->vid_stream = 0;
+                hdw->vid_stream = NULL;
         }
         if (hdw->audio_stat) {
                 hdw->audio_stat->detach(hdw->audio_stat->ctxt);
@@ -1979,7 +1979,7 @@ void pvr2_hdw_destroy(struct pvr2_hdw *hdw)
                 if ((hdw->unit_number >= 0) &&
                     (hdw->unit_number < PVR_NUM) &&
                     (unit_pointers[hdw->unit_number] == hdw)) {
-                        unit_pointers[hdw->unit_number] = 0;
+                        unit_pointers[hdw->unit_number] = NULL;
                 }
         } while (0); up(&pvr2_unit_sem);
         if (hdw->controls) kfree(hdw->controls);
@@ -2041,12 +2041,12 @@ static void pvr2_hdw_internal_set_std_avail(struct pvr2_hdw *hdw)
 
         if (hdw->std_defs) {
                 kfree(hdw->std_defs);
-                hdw->std_defs = 0;
+                hdw->std_defs = NULL;
         }
         hdw->std_enum_cnt = 0;
         if (hdw->std_enum_names) {
                 kfree(hdw->std_enum_names);
-                hdw->std_enum_names = 0;
+                hdw->std_enum_names = NULL;
         }
 
         if (!std_cnt) {
@@ -2097,7 +2097,7 @@ unsigned int pvr2_hdw_get_ctrl_count(struct pvr2_hdw *hdw)
 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_index(struct pvr2_hdw *hdw,
                                              unsigned int idx)
 {
-        if (idx >= hdw->control_cnt) return 0;
+        if (idx >= hdw->control_cnt) return NULL;
         return hdw->controls + idx;
 }
 
@@ -2116,7 +2116,7 @@ struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_id(struct pvr2_hdw *hdw,
                 i = cptr->info->internal_id;
                 if (i && (i == ctl_id)) return cptr;
         }
-        return 0;
+        return NULL;
 }
 
 
@@ -2133,7 +2133,7 @@ struct pvr2_ctrl *pvr2_hdw_get_ctrl_v4l(struct pvr2_hdw *hdw,unsigned int ctl_id
                 i = cptr->info->v4l_id;
                 if (i && (i == ctl_id)) return cptr;
         }
-        return 0;
+        return NULL;
 }
 
 
@@ -2147,7 +2147,7 @@ struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *hdw,
         int i;
 
         /* This could be made a lot more efficient, but for now... */
-        cp2 = 0;
+        cp2 = NULL;
         for (idx = 0; idx < hdw->control_cnt; idx++) {
                 cptr = hdw->controls + idx;
                 i = cptr->info->v4l_id;
@@ -2157,7 +2157,7 @@ struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *hdw,
                 cp2 = cptr;
         }
         return cp2;
-        return 0;
+        return NULL;
 }
 
 
@@ -2414,7 +2414,7 @@ void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *hdw, int enable_flag)
                         pvr2_trace(PVR2_TRACE_FIRMWARE,
                                    "Cleaning up after CPU firmware fetch");
                         kfree(hdw->fw_buffer);
-                        hdw->fw_buffer = 0;
+                        hdw->fw_buffer = NULL;
                         hdw->fw_size = 0;
                         /* Now release the CPU.  It will disconnect and
                            reconnect later. */
@@ -2863,7 +2863,7 @@ static void pvr2_hdw_render_useless_unlocked(struct pvr2_hdw *hdw)
         pvr2_trace(PVR2_TRACE_INIT,"render_useless");
         hdw->flag_ok = 0;
         if (hdw->vid_stream) {
-                pvr2_stream_setup(hdw->vid_stream,0,0,0);
+                pvr2_stream_setup(hdw->vid_stream,NULL,0,0);
         }
         hdw->flag_streaming_enabled = 0;
         hdw->subsys_enabled_mask = 0;
@@ -2882,7 +2882,7 @@ void pvr2_hdw_device_reset(struct pvr2_hdw *hdw)
 {
         int ret;
         pvr2_trace(PVR2_TRACE_INIT,"Performing a device reset...");
-        ret = usb_lock_device_for_reset(hdw->usb_dev,0);
+        ret = usb_lock_device_for_reset(hdw->usb_dev,NULL);
         if (ret == 1) {
                 ret = usb_reset_device(hdw->usb_dev);
                 usb_unlock_device(hdw->usb_dev);
@@ -2931,7 +2931,7 @@ int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *hdw)
                 pvr2_trace(PVR2_TRACE_INIT,"Requesting uproc hard reset");
                 hdw->flag_ok = !0;
                 hdw->cmd_buffer[0] = 0xdd;
-                status = pvr2_send_request(hdw,hdw->cmd_buffer,1,0,0);
+                status = pvr2_send_request(hdw,hdw->cmd_buffer,1,NULL,0);
         } while (0); LOCK_GIVE(hdw->ctl_lock);
         return status;
 }
@@ -2943,7 +2943,7 @@ int pvr2_hdw_cmd_powerup(struct pvr2_hdw *hdw)
         LOCK_TAKE(hdw->ctl_lock); do {
                 pvr2_trace(PVR2_TRACE_INIT,"Requesting powerup");
                 hdw->cmd_buffer[0] = 0xde;
-                status = pvr2_send_request(hdw,hdw->cmd_buffer,1,0,0);
+                status = pvr2_send_request(hdw,hdw->cmd_buffer,1,NULL,0);
         } while (0); LOCK_GIVE(hdw->ctl_lock);
         return status;
 }
@@ -2975,7 +2975,7 @@ static int pvr2_hdw_cmd_usbstream(struct pvr2_hdw *hdw,int runFl)
         int status;
         LOCK_TAKE(hdw->ctl_lock); do {
                 hdw->cmd_buffer[0] = (runFl ? 0x36 : 0x37);
-                status = pvr2_send_request(hdw,hdw->cmd_buffer,1,0,0);
+                status = pvr2_send_request(hdw,hdw->cmd_buffer,1,NULL,0);
         } while (0); LOCK_GIVE(hdw->ctl_lock);
         if (!status) {
                 hdw->subsys_enabled_mask =
diff --git a/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c
index 9f81aff2b38a..8a9933dec912 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c
@@ -196,7 +196,7 @@ const struct pvr2_i2c_op pvr2_i2c_op_v4l2_size = {
 static void do_log(struct pvr2_hdw *hdw)
 {
         pvr2_trace(PVR2_TRACE_CHIPS,"i2c v4l2 do_log()");
-        pvr2_i2c_core_cmd(hdw,VIDIOC_LOG_STATUS,0);
+        pvr2_i2c_core_cmd(hdw,VIDIOC_LOG_STATUS,NULL);
 
 }
 
@@ -217,7 +217,7 @@ const struct pvr2_i2c_op pvr2_i2c_op_v4l2_log = {
 void pvr2_v4l2_cmd_stream(struct pvr2_i2c_client *cp,int fl)
 {
         pvr2_i2c_client_cmd(cp,
-                            (fl ? VIDIOC_STREAMON : VIDIOC_STREAMOFF),0);
+                            (fl ? VIDIOC_STREAMON : VIDIOC_STREAMOFF),NULL);
 }
 
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c b/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
index eca48c90b553..7fca47982277 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
@@ -271,7 +271,7 @@ static int i2c_hack_cx25840(struct pvr2_hdw *hdw,
                            "WARNING: Disabling further access to the device"
                            " to prevent other foul-ups.");
                 // This blocks all further communication with the part.
-                hdw->i2c_func[0x44] = 0;
+                hdw->i2c_func[0x44] = NULL;
                 pvr2_hdw_render_useless(hdw);
                 goto fail;
         }
@@ -298,7 +298,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
                          int num)
 {
         int ret = -ENOTSUPP;
-        pvr2_i2c_func funcp = 0;
+        pvr2_i2c_func funcp = NULL;
         struct pvr2_hdw *hdw = (struct pvr2_hdw *)(i2c_adap->algo_data);
 
         if (!num) {
@@ -323,7 +323,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
                         u16 tcnt,bcnt,offs;
                         if (!msgs[0].len) {
                                 /* Length == 0 read.  This is a probe. */
-                                if (funcp(hdw,msgs[0].addr,0,0,0,0)) {
+                                if (funcp(hdw,msgs[0].addr,NULL,0,NULL,0)) {
                                         ret = -EIO;
                                         goto done;
                                 }
@@ -340,7 +340,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
                                 if (bcnt > sizeof(hdw->cmd_buffer)-1) {
                                         bcnt = sizeof(hdw->cmd_buffer)-1;
                                 }
-                                if (funcp(hdw,msgs[0].addr,0,0,
+                                if (funcp(hdw,msgs[0].addr,NULL,0,
                                           msgs[0].buf+offs,bcnt)) {
                                         ret = -EIO;
                                         goto done;
@@ -354,7 +354,7 @@ static int pvr2_i2c_xfer(struct i2c_adapter *i2c_adap,
                         /* Simple write */
                         ret = 1;
                         if (funcp(hdw,msgs[0].addr,
-                                  msgs[0].buf,msgs[0].len,0,0)) {
+                                  msgs[0].buf,msgs[0].len,NULL,0)) {
                                 ret = -EIO;
                         }
                         goto done;
@@ -875,7 +875,7 @@ static void do_i2c_scan(struct pvr2_hdw *hdw)
         msg[0].addr = 0;
         msg[0].flags = I2C_M_RD;
         msg[0].len = 0;
-        msg[0].buf = 0;
+        msg[0].buf = NULL;
         printk("%s: i2c scan beginning\n",hdw->name);
         for (i = 0; i < 128; i++) {
                 msg[0].addr = i;
diff --git a/drivers/media/video/pvrusb2/pvrusb2-io.c b/drivers/media/video/pvrusb2/pvrusb2-io.c
index c032777a977f..681f79c8064e 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-io.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-io.c
@@ -116,8 +116,8 @@ static void pvr2_buffer_describe(struct pvr2_buffer *bp,const char *msg)
                    (bp ? pvr2_buffer_state_decode(bp->state) : "(invalid)"),
                    (bp ? bp->id : 0),
                    (bp ? bp->status : 0),
-                   (bp ? bp->stream : 0),
-                   (bp ? bp->purb : 0),
+                   (bp ? bp->stream : NULL),
+                   (bp ? bp->purb : NULL),
                    (bp ? bp->signature : 0));
 }
 #endif  /*  SANITY_CHECK_BUFFERS  */
@@ -286,7 +286,7 @@ static void pvr2_buffer_done(struct pvr2_buffer *bp)
         pvr2_buffer_wipe(bp);
         pvr2_buffer_set_none(bp);
         bp->signature = 0;
-        bp->stream = 0;
+        bp->stream = NULL;
         if (bp->purb) usb_free_urb(bp->purb);
         pvr2_trace(PVR2_TRACE_BUF_POOL,"/*---TRACE_FLOW---*/"
                    " bufferDone     %p",bp);
@@ -341,13 +341,13 @@ static int pvr2_stream_buffer_count(struct pvr2_stream *sp,unsigned int cnt)
                         struct pvr2_buffer *bp;
                         bp = sp->buffers[sp->buffer_total_count - 1];
                         /* Paranoia */
-                        sp->buffers[sp->buffer_total_count - 1] = 0;
+                        sp->buffers[sp->buffer_total_count - 1] = NULL;
                         (sp->buffer_total_count)--;
                         pvr2_buffer_done(bp);
                         kfree(bp);
                 }
                 if (scnt < sp->buffer_slot_count) {
-                        struct pvr2_buffer **nb = 0;
+                        struct pvr2_buffer **nb = NULL;
                         if (scnt) {
                                 nb = kmalloc(scnt * sizeof(*nb),GFP_KERNEL);
                                 if (!nb) return -ENOMEM;
@@ -530,21 +530,21 @@ int pvr2_stream_set_buffer_count(struct pvr2_stream *sp,unsigned int cnt)
 struct pvr2_buffer *pvr2_stream_get_idle_buffer(struct pvr2_stream *sp)
 {
         struct list_head *lp = sp->idle_list.next;
-        if (lp == &sp->idle_list) return 0;
+        if (lp == &sp->idle_list) return NULL;
         return list_entry(lp,struct pvr2_buffer,list_overhead);
 }
 
 struct pvr2_buffer *pvr2_stream_get_ready_buffer(struct pvr2_stream *sp)
 {
         struct list_head *lp = sp->ready_list.next;
-        if (lp == &sp->ready_list) return 0;
+        if (lp == &sp->ready_list) return NULL;
         return list_entry(lp,struct pvr2_buffer,list_overhead);
 }
 
 struct pvr2_buffer *pvr2_stream_get_buffer(struct pvr2_stream *sp,int id)
 {
-        if (id < 0) return 0;
-        if (id >= sp->buffer_total_count) return 0;
+        if (id < 0) return NULL;
+        if (id >= sp->buffer_total_count) return NULL;
         return sp->buffers[id];
 }
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-ioread.c b/drivers/media/video/pvrusb2/pvrusb2-ioread.c
index 4dce1a462f50..f7a2e225a002 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-ioread.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-ioread.c
@@ -54,7 +54,7 @@ static int pvr2_ioread_init(struct pvr2_ioread *cp)
 {
         unsigned int idx;
 
-        cp->stream = 0;
+        cp->stream = NULL;
         mutex_init(&cp->mutex);
 
         for (idx = 0; idx < BUFFER_COUNT; idx++) {
@@ -77,7 +77,7 @@ static void pvr2_ioread_done(struct pvr2_ioread *cp)
 {
         unsigned int idx;
 
-        pvr2_ioread_setup(cp,0);
+        pvr2_ioread_setup(cp,NULL);
         for (idx = 0; idx < BUFFER_COUNT; idx++) {
                 if (!(cp->buffer_storage[idx])) continue;
                 kfree(cp->buffer_storage[idx]);
@@ -88,12 +88,12 @@ struct pvr2_ioread *pvr2_ioread_create(void)
 {
         struct pvr2_ioread *cp;
         cp = kmalloc(sizeof(*cp),GFP_KERNEL);
-        if (!cp) return 0;
+        if (!cp) return NULL;
         pvr2_trace(PVR2_TRACE_STRUCT,"pvr2_ioread_create id=%p",cp);
         memset(cp,0,sizeof(*cp));
         if (pvr2_ioread_init(cp) < 0) {
                 kfree(cp);
-                return 0;
+                return NULL;
         }
         return cp;
 }
@@ -105,7 +105,7 @@ void pvr2_ioread_destroy(struct pvr2_ioread *cp)
         pvr2_trace(PVR2_TRACE_STRUCT,"pvr2_ioread_destroy id=%p",cp);
         if (cp->sync_key_ptr) {
                 kfree(cp->sync_key_ptr);
-                cp->sync_key_ptr = 0;
+                cp->sync_key_ptr = NULL;
         }
         kfree(cp);
 }
@@ -124,7 +124,7 @@ void pvr2_ioread_set_sync_key(struct pvr2_ioread *cp,
         if (sync_key_len != cp->sync_key_len) {
                 if (cp->sync_key_ptr) {
                         kfree(cp->sync_key_ptr);
-                        cp->sync_key_ptr = 0;
+                        cp->sync_key_ptr = NULL;
                 }
                 cp->sync_key_len = 0;
                 if (sync_key_len) {
@@ -144,8 +144,8 @@ static void pvr2_ioread_stop(struct pvr2_ioread *cp)
         pvr2_trace(PVR2_TRACE_START_STOP,
                    "/*---TRACE_READ---*/ pvr2_ioread_stop id=%p",cp);
         pvr2_stream_kill(cp->stream);
-        cp->c_buf = 0;
-        cp->c_data_ptr = 0;
+        cp->c_buf = NULL;
+        cp->c_data_ptr = NULL;
         cp->c_data_len = 0;
         cp->c_data_offs = 0;
         cp->enabled = 0;
@@ -179,8 +179,8 @@ static int pvr2_ioread_start(struct pvr2_ioread *cp)
                 }
         }
         cp->enabled = !0;
-        cp->c_buf = 0;
-        cp->c_data_ptr = 0;
+        cp->c_buf = NULL;
+        cp->c_data_ptr = NULL;
         cp->c_data_len = 0;
         cp->c_data_offs = 0;
         cp->stream_running = 0;
@@ -214,7 +214,7 @@ int pvr2_ioread_setup(struct pvr2_ioread *cp,struct pvr2_stream *sp)
                         pvr2_ioread_stop(cp);
                         pvr2_stream_kill(cp->stream);
                         pvr2_stream_set_buffer_count(cp->stream,0);
-                        cp->stream = 0;
+                        cp->stream = NULL;
                 }
                 if (sp) {
                         pvr2_trace(PVR2_TRACE_START_STOP,
@@ -270,8 +270,8 @@ static int pvr2_ioread_get_buffer(struct pvr2_ioread *cp)
                                 pvr2_ioread_stop(cp);
                                 return 0;
                         }
-                        cp->c_buf = 0;
-                        cp->c_data_ptr = 0;
+                        cp->c_buf = NULL;
+                        cp->c_data_ptr = NULL;
                         cp->c_data_len = 0;
                         cp->c_data_offs = 0;
                 }
diff --git a/drivers/media/video/pvrusb2/pvrusb2-main.c b/drivers/media/video/pvrusb2/pvrusb2-main.c
index b95248274ed0..8f1a5afdd34e 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-main.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-main.c
@@ -54,7 +54,7 @@ module_param_named(debug,pvrusb2_debug,int,S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(debug, "Debug trace mask");
 
 #ifdef CONFIG_VIDEO_PVRUSB2_SYSFS
-static struct pvr2_sysfs_class *class_ptr = 0;
+static struct pvr2_sysfs_class *class_ptr = NULL;
 #endif /* CONFIG_VIDEO_PVRUSB2_SYSFS */
 
 static void pvr_setup_attach(struct pvr2_context *pvr)
@@ -104,10 +104,10 @@ static void pvr_disconnect(struct usb_interface *intf)
 }
 
 static struct usb_driver pvr_driver = {
-        name:           "pvrusb2",
-        id_table:       pvr2_device_table,
-        probe:          pvr_probe,
-        disconnect:     pvr_disconnect
+        .name =         "pvrusb2",
+        .id_table =     pvr2_device_table,
+        .probe =        pvr_probe,
+        .disconnect =   pvr_disconnect
 };
 
 /*
diff --git a/drivers/media/video/pvrusb2/pvrusb2-std.c b/drivers/media/video/pvrusb2/pvrusb2-std.c
index 134063693643..f95c598ff627 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-std.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-std.c
@@ -121,7 +121,7 @@ static const struct std_name *find_std_name(const struct std_name *arrPtr,
                 if (strlen(p->name) != bufSize) continue;
                 if (!memcmp(bufPtr,p->name,bufSize)) return p;
         }
-        return 0;
+        return NULL;
 }
 
 
@@ -289,7 +289,7 @@ static struct v4l2_standard *match_std(v4l2_std_id id)
                         return generic_standards + idx;
                 }
         }
-        return 0;
+        return NULL;
 }
 
 static int pvr2_std_fill(struct v4l2_standard *std,v4l2_std_id id)
@@ -364,7 +364,7 @@ struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr,
 
         pvr2_trace(PVR2_TRACE_INIT,"Setting up %u unique standard(s)",
                    std_cnt);
-        if (!std_cnt) return 0; // paranoia
+        if (!std_cnt) return NULL; // paranoia
 
         stddefs = kmalloc(sizeof(struct v4l2_standard) * std_cnt,
                           GFP_KERNEL);
diff --git a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
index c6e6523d74b4..6af55a8b6f05 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
@@ -504,7 +504,7 @@ static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
         cip->cptr = cptr;
 
         cip->chptr = sfp;
-        cip->item_next = 0;
+        cip->item_next = NULL;
         if (sfp->item_last) {
                 sfp->item_last->item_next = cip;
         } else {
@@ -625,7 +625,7 @@ static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
                                  &sfp->debugifc->attr_debuginfo);
         class_device_remove_file(sfp->class_dev,&sfp->debugifc->attr_debugcmd);
         kfree(sfp->debugifc);
-        sfp->debugifc = 0;
+        sfp->debugifc = NULL;
 }
 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 
@@ -678,9 +678,9 @@ static void class_dev_destroy(struct pvr2_sysfs *sfp)
         class_device_remove_file(sfp->class_dev,&sfp->attr_v4l_minor_number);
         class_device_remove_file(sfp->class_dev,&sfp->attr_unit_number);
         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
-        sfp->class_dev->class_data = 0;
+        sfp->class_dev->class_data = NULL;
         class_device_unregister(sfp->class_dev);
-        sfp->class_dev = 0;
+        sfp->class_dev = NULL;
 }
 
 
@@ -739,13 +739,13 @@ static void class_dev_create(struct pvr2_sysfs *sfp,
         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
-        sfp->attr_v4l_minor_number.store = 0;
+        sfp->attr_v4l_minor_number.store = NULL;
         class_device_create_file(sfp->class_dev,&sfp->attr_v4l_minor_number);
         sfp->attr_unit_number.attr.owner = THIS_MODULE;
         sfp->attr_unit_number.attr.name = "unit_number";
         sfp->attr_unit_number.attr.mode = S_IRUGO;
         sfp->attr_unit_number.show = unit_number_show;
-        sfp->attr_unit_number.store = 0;
+        sfp->attr_unit_number.store = NULL;
         class_device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 
         pvr2_sysfs_add_controls(sfp);
@@ -806,7 +806,7 @@ struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
                 pvr2_sysfs_trace(
                         "Registration failed for pvr2_sysfs_class id=%p",clp);
                 kfree(clp);
-                clp = 0;
+                clp = NULL;
         }
         return clp;
 }
diff --git a/drivers/media/video/pvrusb2/pvrusb2-tuner.c b/drivers/media/video/pvrusb2/pvrusb2-tuner.c
index f4aba8144ce0..af9f246f8d3f 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-tuner.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-tuner.c
@@ -69,7 +69,7 @@ static void tuner_update(struct pvr2_tuner_handler *ctxt)
 
 static void pvr2_tuner_detach(struct pvr2_tuner_handler *ctxt)
 {
-        ctxt->client->handler = 0;
+        ctxt->client->handler = NULL;
         kfree(ctxt);
 }
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index b12c2a7f1359..0caf70b8c0de 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -760,9 +760,9 @@ static int pvr2_v4l2_release(struct inode *inode, struct file *file)
                 hdw = fhp->channel.mc_head->hdw;
                 pvr2_hdw_set_streaming(hdw,0);
                 sp = pvr2_ioread_get_stream(fhp->rhp);
-                if (sp) pvr2_stream_set_callback(sp,0,0);
+                if (sp) pvr2_stream_set_callback(sp,NULL,NULL);
                 pvr2_ioread_destroy(fhp->rhp);
-                fhp->rhp = 0;
+                fhp->rhp = NULL;
         }
         v4l2_prio_close(&vp->prio, &fhp->prio);
         file->private_data = NULL;
@@ -778,9 +778,9 @@ static int pvr2_v4l2_release(struct inode *inode, struct file *file)
                 } else {
                         vp->vfirst = fhp->vnext;
                 }
-                fhp->vnext = 0;
-                fhp->vprev = 0;
-                fhp->vhead = 0;
+                fhp->vnext = NULL;
+                fhp->vprev = NULL;
+                fhp->vhead = NULL;
                 pvr2_channel_done(&fhp->channel);
                 pvr2_trace(PVR2_TRACE_STRUCT,
                            "Destroying pvr_v4l2_fh id=%p",fhp);
@@ -795,7 +795,7 @@ static int pvr2_v4l2_release(struct inode *inode, struct file *file)
 
 static int pvr2_v4l2_open(struct inode *inode, struct file *file)
 {
-        struct pvr2_v4l2_dev *dip = 0; /* Our own context pointer */
+        struct pvr2_v4l2_dev *dip = NULL; /* Our own context pointer */
         struct pvr2_v4l2_fh *fhp;
         struct pvr2_v4l2 *vp;
         struct pvr2_hdw *hdw;
@@ -853,7 +853,7 @@ static int pvr2_v4l2_open(struct inode *inode, struct file *file)
         pvr2_context_enter(vp->channel.mc_head); do {
                 pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr_v4l2_fh id=%p",fhp);
                 pvr2_channel_init(&fhp->channel,vp->channel.mc_head);
-                fhp->vnext = 0;
+                fhp->vnext = NULL;
                 fhp->vprev = vp->vlast;
                 if (vp->vlast) {
                         vp->vlast->vnext = fhp;
@@ -896,7 +896,7 @@ static int pvr2_v4l2_iosetup(struct pvr2_v4l2_fh *fh)
 
         fh->rhp = pvr2_channel_create_mpeg_stream(fh->dev_info->stream);
         if (!fh->rhp) {
-                pvr2_channel_claim_stream(&fh->channel,0);
+                pvr2_channel_claim_stream(&fh->channel,NULL);
                 return -ENOMEM;
         }
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-video-v4l.c b/drivers/media/video/pvrusb2/pvrusb2-video-v4l.c
index e4ec7f25194c..05f2cddeb47b 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-video-v4l.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-video-v4l.c
@@ -126,8 +126,8 @@ static const struct pvr2_v4l_decoder_ops decoder_ops[] = {
 
 static void decoder_detach(struct pvr2_v4l_decoder *ctxt)
 {
-        ctxt->client->handler = 0;
-        ctxt->hdw->decoder_ctrl = 0;
+        ctxt->client->handler = NULL;
+        ctxt->hdw->decoder_ctrl = NULL;
         kfree(ctxt);
 }
 
diff --git a/drivers/media/video/pvrusb2/pvrusb2-wm8775.c b/drivers/media/video/pvrusb2/pvrusb2-wm8775.c
index fcad346e3955..2413e5198e16 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-wm8775.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-wm8775.c
@@ -89,7 +89,7 @@ static unsigned int wm8775_describe(struct pvr2_v4l_wm8775 *ctxt,
 
 static void wm8775_detach(struct pvr2_v4l_wm8775 *ctxt)
 {
-        ctxt->client->handler = 0;
+        ctxt->client->handler = NULL;
         kfree(ctxt);
 }