V4L/DVB (8199): gspca: Compile warnings about NULL ptr.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

3 files changed, 42 insertions, 41 deletions

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 708270a46e1f..1225c0fe26f0 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -334,7 +334,7 @@ static void *rvmalloc(unsigned long size)
 
 /*      size = PAGE_ALIGN(size);        (already done) */
         mem = vmalloc_32(size);
-        if (mem != 0) {
+        if (mem != NULL) {
                 memset(mem, 0, size);
                 adr = (unsigned long) mem;
                 while ((long) size > 0) {
@@ -464,7 +464,7 @@ static void frame_free(struct gspca_dev *gspca_dev)
         int i;
 
         PDEBUG(D_STREAM, "frame free");
-        if (gspca_dev->frbuf != 0) {
+        if (gspca_dev->frbuf != NULL) {
                 rvfree(gspca_dev->frbuf,
                         gspca_dev->nframes * gspca_dev->frsz);
                 gspca_dev->frbuf = NULL;
@@ -487,7 +487,7 @@ static void destroy_urbs(struct gspca_dev *gspca_dev)
 
                 gspca_dev->urb[i] = NULL;
                 usb_kill_urb(urb);
-                if (urb->transfer_buffer != 0)
+                if (urb->transfer_buffer != NULL)
                         usb_buffer_free(gspca_dev->dev,
                                         urb->transfer_buffer_length,
                                         urb->transfer_buffer,
@@ -991,7 +991,7 @@ static int dev_close(struct inode *inode, struct file *file)
                 gspca_dev->sd_desc->close(gspca_dev);
                 mutex_unlock(&gspca_dev->usb_lock);
                 frame_free(gspca_dev);
-                gspca_dev->capt_file = 0;
+                gspca_dev->capt_file = NULL;
                 gspca_dev->memory = GSPCA_MEMORY_NO;
         }
         file->private_data = NULL;
@@ -1165,7 +1165,7 @@ static int vidioc_reqbufs(struct file *file, void *priv,
         }
 
         /* only one file may do capture */
-        if ((gspca_dev->capt_file != 0 && gspca_dev->capt_file != file)
+        if ((gspca_dev->capt_file != NULL && gspca_dev->capt_file != file)
             || gspca_dev->streaming) {
                 ret = -EBUSY;
                 goto out;
@@ -1173,7 +1173,7 @@ static int vidioc_reqbufs(struct file *file, void *priv,
 
         if (rb->count == 0) { /* unrequest? */
                 frame_free(gspca_dev);
-                gspca_dev->capt_file = 0;
+                gspca_dev->capt_file = NULL;
         } else {
                 gspca_dev->memory = rb->memory;
                 ret = frame_alloc(gspca_dev, rb->count);
@@ -1382,7 +1382,7 @@ static int vidiocgmbuf(struct file *file, void *priv,
 static int dev_mmap(struct file *file, struct vm_area_struct *vma)
 {
         struct gspca_dev *gspca_dev = file->private_data;
-        struct gspca_frame *frame = 0;
+        struct gspca_frame *frame;
         struct page *page;
         unsigned long addr, start, size;
         int i, ret;
@@ -1405,6 +1405,7 @@ static int dev_mmap(struct file *file, struct vm_area_struct *vma)
                 goto out;
         }
 
+        frame = NULL;
         for (i = 0; i < gspca_dev->nframes; ++i) {
                 if (gspca_dev->frame[i].v4l2_buf.memory != V4L2_MEMORY_MMAP) {
                         PDEBUG(D_STREAM, "mmap bad memory type");
@@ -1416,7 +1417,7 @@ static int dev_mmap(struct file *file, struct vm_area_struct *vma)
                         break;
                 }
         }
-        if (frame == 0) {
+        if (frame == NULL) {
                 PDEBUG(D_STREAM, "mmap no frame buffer found");
                 ret = -EINVAL;
                 goto out;
diff --git a/drivers/media/video/gspca/t613.c b/drivers/media/video/gspca/t613.c
index 4e69a8e16357..96f01d267475 100644
--- a/drivers/media/video/gspca/t613.c
+++ b/drivers/media/video/gspca/t613.c
@@ -504,31 +504,31 @@ static int init_default_parameters(struct gspca_dev *gspca_dev)
         t16RegWrite(dev, 0x01, 0x0000, n3, 0x06);
         t16RegWrite(dev, 0x01, 0x0000, n4, 0x46);
         t16RegRead(dev, 0x0080, &test_byte, 1);
-        t16RegWrite(dev, 0x00, 0x2c80, NULL, 0x0);
+        t16RegWrite(dev, 0x00, 0x2c80, NULL, 0);
         t16RegWrite(dev, 0x01, 0x0000, nset2, 0x14);
         t16RegWrite(dev, 0x01, 0x0000, nset3, 0x12);
         t16RegWrite(dev, 0x01, 0x0000, nset4, 0x12);
-        t16RegWrite(dev, 0x00, 0x3880, NULL, 0x0);
-        t16RegWrite(dev, 0x00, 0x3880, NULL, 0x0);
-        t16RegWrite(dev, 0x00, 0x338e, NULL, 0x0);
+        t16RegWrite(dev, 0x00, 0x3880, NULL, 0);
+        t16RegWrite(dev, 0x00, 0x3880, NULL, 0);
+        t16RegWrite(dev, 0x00, 0x338e, NULL, 0);
         t16RegWrite(dev, 0x01, 0x0000, nset5, 0x04);
-        t16RegWrite(dev, 0x00, 0x00a9, NULL, 0x0);
+        t16RegWrite(dev, 0x00, 0x00a9, NULL, 0);
         t16RegWrite(dev, 0x01, 0x0000, nset6, 0x22);
-        t16RegWrite(dev, 0x00, 0x86bb, NULL, 0x0);
-        t16RegWrite(dev, 0x00, 0x4aa6, NULL, 0x0);
+        t16RegWrite(dev, 0x00, 0x86bb, NULL, 0);
+        t16RegWrite(dev, 0x00, 0x4aa6, NULL, 0);
 
         t16RegWrite(dev, 0x01, 0x0000, missing, 0x08);
 
-        t16RegWrite(dev, 0x00, 0x2087, NULL, 0x0);
-        t16RegWrite(dev, 0x00, 0x2088, NULL, 0x0);
-        t16RegWrite(dev, 0x00, 0x2089, NULL, 0x0);
+        t16RegWrite(dev, 0x00, 0x2087, NULL, 0);
+        t16RegWrite(dev, 0x00, 0x2088, NULL, 0);
+        t16RegWrite(dev, 0x00, 0x2089, NULL, 0);
 
         t16RegWrite(dev, 0x01, 0x0000, nset7, 0x04);
         t16RegWrite(dev, 0x01, 0x0000, nset10, 0x06);
         t16RegWrite(dev, 0x01, 0x0000, nset8, 0x06);
         t16RegWrite(dev, 0x01, 0x0000, nset9, 0x04);
 
-        t16RegWrite(dev, 0x00, 0x2880, NULL, 0x00);
+        t16RegWrite(dev, 0x00, 0x2880, NULL, 0);
         t16RegWrite(dev, 0x01, 0x0000, nset2, 0x14);
         t16RegWrite(dev, 0x01, 0x0000, nset3, 0x12);
         t16RegWrite(dev, 0x01, 0x0000, nset4, 0x12);
@@ -581,9 +581,9 @@ static void seteffect(struct gspca_dev *gspca_dev)
         }
 
         if (sd->effect == 1 || sd->effect == 4)
-                t16RegWrite(dev, 0x00, 0x4aa6, NULL, 0x00);
+                t16RegWrite(dev, 0x00, 0x4aa6, NULL, 0);
         else
-                t16RegWrite(dev, 0x00, 0xfaa6, NULL, 0x00);
+                t16RegWrite(dev, 0x00, 0xfaa6, NULL, 0);
 }
 
 static void setwhitebalance(struct gspca_dev *gspca_dev)
@@ -649,7 +649,7 @@ static void setsharpness(struct gspca_dev *gspca_dev)
 
         reg_to_write = 0x0aa6 + 0x1000 * sd->sharpness;
 
-        t16RegWrite(dev, 0x00, reg_to_write, NULL, 0x00);
+        t16RegWrite(dev, 0x00, reg_to_write, NULL, 0);
 }
 
 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
@@ -870,16 +870,16 @@ static void sd_start(struct gspca_dev *gspca_dev)
         t16RegWrite(dev, 0x01, 0x0000, tas5130a_sensor_init[1], 0x8);
         t16RegWrite(dev, 0x01, 0x0000, tas5130a_sensor_init[2], 0x8);
         t16RegWrite(dev, 0x01, 0x0000, tas5130a_sensor_init[3], 0x8);
-        t16RegWrite(dev, 0x00, 0x3c80, NULL, 0x00);
+        t16RegWrite(dev, 0x00, 0x3c80, NULL, 0);
                 /* just in case and to keep sync with logs  (for mine) */
         t16RegWrite(dev, 0x01, 0x0000, tas5130a_sensor_init[3], 0x8);
-        t16RegWrite(dev, 0x00, 0x3c80, NULL, 0x00);
+        t16RegWrite(dev, 0x00, 0x3c80, NULL, 0);
                 /* just in case and to keep sync with logs  (for mine) */
         t16RegWrite(dev, 0x01, 0x0000, t1, 4);
         t16RegWrite(dev, 0x01, 0x0000, t2, 6);
-        t16RegRead(dev, 0x0012, &test_byte, 0x1);
+        t16RegRead(dev, 0x0012, &test_byte, 0x01);
         t16RegWrite(dev, 0x01, 0x0000, t3, 0x10);
-        t16RegWrite(dev, 0x00, 0x0013, NULL, 0x00);
+        t16RegWrite(dev, 0x00, 0x0013, NULL, 0);
         t16RegWrite(dev, 0x01, 0x0000, t4, 0x4);
         /* restart on each start, just in case, sometimes regs goes wrong
          * when using controls from app */
diff --git a/drivers/media/video/gspca/zc3xx.c b/drivers/media/video/gspca/zc3xx.c
index 878344e4d2ec..63dd8916d6b6 100644
--- a/drivers/media/video/gspca/zc3xx.c
+++ b/drivers/media/video/gspca/zc3xx.c
@@ -6425,11 +6425,11 @@ static void setcontrast(struct gspca_dev *gspca_dev)
                 {0x18, 0x20, 0x20, 0x1c, 0x16, 0x13, 0x10, 0x0e,
                  0x0b, 0x09, 0x07, 0x00, 0x00, 0x00, 0x00, 0x01};
         static const __u8 *gamma_tb[] = {
-                0, Tgamma_1, Tgamma_2,
+                NULL, Tgamma_1, Tgamma_2,
                 Tgamma_3, Tgamma_4, Tgamma_5, Tgamma_6
         };
         static const __u8 *gradient_tb[] = {
-                0, Tgradient_1, Tgradient_2,
+                NULL, Tgradient_1, Tgradient_2,
                 Tgradient_3, Tgradient_4, Tgradient_5, Tgradient_6
         };
 #ifdef CONFIG_VIDEO_ADV_DEBUG
@@ -6544,21 +6544,21 @@ static int setlightfreq(struct gspca_dev *gspca_dev)
                  gc0305_50HZ, gc0305_50HZ,
                  gc0305_60HZ, gc0305_60HZ},
 /* SENSOR_HDCS2020 3 */
-                {0, 0,
-                 0, 0,
-                 0, 0},
+                {NULL, NULL,
+                 NULL, NULL,
+                 NULL, NULL},
 /* SENSOR_HDCS2020b 4 */
                 {hdcs2020b_NoFliker, hdcs2020b_NoFliker,
                  hdcs2020b_50HZ, hdcs2020b_50HZ,
                  hdcs2020b_60HZ, hdcs2020b_60HZ},
 /* SENSOR_HV7131B 5 */
-                {0, 0,
-                 0, 0,
-                 0, 0},
+                {NULL, NULL,
+                 NULL, NULL,
+                 NULL, NULL},
 /* SENSOR_HV7131C 6 */
-                {0, 0,
-                 0, 0,
-                 0, 0},
+                {NULL, NULL,
+                 NULL, NULL,
+                 NULL, NULL},
 /* SENSOR_ICM105A 7 */
                 {icm105a_NoFliker, icm105a_NoFlikerScale,
                  icm105a_50HZ, icm105a_50HZScale,
@@ -6572,9 +6572,9 @@ static int setlightfreq(struct gspca_dev *gspca_dev)
                  OV7620_50HZ, OV7620_50HZ,
                  OV7620_60HZ, OV7620_60HZ},
 /* SENSOR_OV7630C 10 */
-                {0, 0,
-                 0, 0,
-                 0, 0},
+                {NULL, NULL,
+                 NULL, NULL,
+                 NULL, NULL},
 /* SENSOR_PAS106 11 */
                 {pas106b_NoFliker, pas106b_NoFliker,
                  pas106b_50HZ, pas106b_50HZ,
@@ -6606,7 +6606,7 @@ static int setlightfreq(struct gspca_dev *gspca_dev)
         if (!mode)
                 i++;                    /* 640x480 */
         zc3_freq = freq_tb[(int) sd->sensor][i];
-        if (zc3_freq != 0) {
+        if (zc3_freq != NULL) {
                 usb_exchange(gspca_dev->dev, zc3_freq);
                 switch (sd->sensor) {
                 case SENSOR_GC0305: