media: cxusb-analog: Fix some coding style issues

This is a new file, so the best moment to make it to follow
Kernel coding style is now.

This patch was partially generated with:

	./scripts/checkpatch.pl --fix-inplace --strict -f drivers/media/usb/dvb-usb/cxusb-analog.c

And manually checked and adjusted to avoid any warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/usb/dvb-usb/cxusb-analog.c

@@ -204,7 +204,7 @@ static bool cxusb_medion_cf_refc_fld_chg(struct dvb_usb_device *dvbdev,
 			      "field %c after line %u field change\n",
 			      firstfield ? '1' : '2', bt656->line);
 
-		if (bt656->buf != NULL && remsamples > 0) {
+		if (bt656->buf && remsamples > 0) {
 			memset(bt656->buf, 0, remsamples);
 			bt656->buf += remsamples;
 
@@ -219,7 +219,7 @@ static bool cxusb_medion_cf_refc_fld_chg(struct dvb_usb_device *dvbdev,
 	}
 
 	remlines = maxlines - bt656->line;
-	if (bt656->buf != NULL && remlines > 0) {
+	if (bt656->buf && remlines > 0) {
 		memset(bt656->buf, 0, remlines * maxlinesamples);
 		bt656->buf += remlines * maxlinesamples;
 
@@ -277,7 +277,7 @@ static void cxusb_medion_cf_refc_line_smpl(struct dvb_usb_device *dvbdev,
 			      bt656->line, bt656->pos);
 
 	remsamples = maxlinesamples - bt656->linesamples;
-	if (bt656->buf != NULL && remsamples > 0) {
+	if (bt656->buf && remsamples > 0) {
 		memset(bt656->buf, 0, remsamples);
 		bt656->buf += remsamples;
 
@@ -313,9 +313,9 @@ static bool cxusb_medion_cf_ref_code(struct dvb_usb_device *dvbdev,
 				     unsigned int maxlinesamples,
 				     unsigned char buf[4])
 {
-	if (bt656->fmode == START_SEARCH)
+	if (bt656->fmode == START_SEARCH) {
 		cxusb_medion_cf_refc_start_sch(dvbdev, bt656, firstfield, buf);
-	else if (bt656->fmode == LINE_SAMPLES) {
+	} else if (bt656->fmode == LINE_SAMPLES) {
 		cxusb_medion_cf_refc_line_smpl(dvbdev, bt656, firstfield,
 					       maxlinesamples, buf);
 		return false;
@@ -359,7 +359,7 @@ static void cxusb_medion_cs_line_smpl(struct cxusb_bt656_params *bt656,
 				      unsigned int maxlinesamples,
 				      unsigned char val)
 {
-	if (bt656->buf != NULL)
+	if (bt656->buf)
 		*(bt656->buf++) = val;
 
 	bt656->linesamples++;
@@ -505,9 +505,10 @@ static bool cxusb_medion_v_process_auxbuf(struct cxusb_medion_dev *cxdev,
 						 struct cxusb_medion_vbuffer,
 						 list);
 			list_del(&cxdev->vbuf->list);
-		} else
+		} else {
 			dev_warn(&dvbdev->udev->dev, "no free buffers\n");
 		}
+	}
 
 	if (bt656->mode == NEW_FRAME || reset) {
 		cxusb_vprintk(dvbdev, URB, "will copy field 1\n");
@@ -516,7 +517,7 @@ static bool cxusb_medion_v_process_auxbuf(struct cxusb_medion_dev *cxdev,
 		bt656->fmode = START_SEARCH;
 		bt656->line = 0;
 
-		if (cxdev->vbuf != NULL) {
+		if (cxdev->vbuf) {
 			cxdev->vbuf->vb2.vb2_buf.timestamp = ktime_get_ns();
 			bt656->buf = vb2_plane_vaddr(&cxdev->vbuf->vb2.vb2_buf,
 						     0);
@@ -550,7 +551,7 @@ static bool cxusb_medion_v_process_auxbuf(struct cxusb_medion_dev *cxdev,
 
 		bt656->mode = NEW_FRAME;
 
-		if (cxdev->vbuf != NULL) {
+		if (cxdev->vbuf) {
 			vb2_set_plane_payload(&cxdev->vbuf->vb2.vb2_buf, 0,
 					      cxdev->width * cxdev->height * 2);
 
@@ -593,7 +594,7 @@ static bool cxusb_medion_v_complete_handle_urb(struct cxusb_medion_dev *cxdev,
 		cxdev->nexturb++;
 		cxdev->nexturb %= CXUSB_VIDEO_URBS;
 		urb = cxdev->streamurbs[cxdev->nexturb];
-	} while (urb == NULL);
+	} while (!urb);
 
 	urb = cxdev->streamurbs[urbn];
 	cxusb_vprintk(dvbdev, URB, "URB %u status = %d\n", urbn, urb->status);
@@ -609,9 +610,9 @@ static bool cxusb_medion_v_complete_handle_urb(struct cxusb_medion_dev *cxdev,
 			      len);
 
 		if (len > 0) {
-			if (cxdev->raw_mode)
+			if (cxdev->raw_mode) {
 				cxusb_medion_v_process_urb_raw(cxdev, urb);
-			else {
+			} else {
 				cxusb_vprintk(dvbdev, URB, "appending URB\n");
 
 				/*
@@ -704,7 +705,7 @@ static void cxusb_medion_urbs_free(struct cxusb_medion_dev *cxdev)
 	unsigned int i;
 
 	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
-		if (cxdev->streamurbs[i] != NULL) {
+		if (cxdev->streamurbs[i]) {
 			kfree(cxdev->streamurbs[i]->transfer_buffer);
 			usb_free_urb(cxdev->streamurbs[i]);
 			cxdev->streamurbs[i] = NULL;
@@ -724,7 +725,7 @@ static void cxusb_medion_return_buffers(struct cxusb_medion_dev *cxdev,
 				VB2_BUF_STATE_ERROR);
 	}
 
-	if (cxdev->vbuf != NULL) {
+	if (cxdev->vbuf) {
 		vb2_buffer_done(&cxdev->vbuf->vb2.vb2_buf,
 				requeue ? VB2_BUF_STATE_QUEUED :
 				VB2_BUF_STATE_ERROR);
@@ -763,7 +764,7 @@ static int cxusb_medion_v_ss_auxbuf_alloc(struct cxusb_medion_dev *cxdev,
 	auxbuflen = framelen + urblen;
 
 	buf = vmalloc(auxbuflen);
-	if (buf == NULL)
+	if (!buf)
 		return -ENOMEM;
 
 	cxusb_auxbuf_init(dvbdev, &cxdev->auxbuf, buf, auxbuflen);
@@ -804,11 +805,11 @@ static u32 cxusb_medion_field_order(struct cxusb_medion_dev *cxdev)
 		return field;
 
 	ret = v4l2_subdev_call(cxdev->cx25840, video, g_std, &norm);
-	if (ret != 0)
+	if (ret != 0) {
 		cxusb_vprintk(dvbdev, OPS,
 			      "cannot get current standard for input %u\n",
 			      (unsigned int)cxdev->input);
-	else {
+	} else {
 		field = cxusb_medion_norm2field_order(norm);
 		if (field != V4L2_FIELD_NONE)
 			return field;
@@ -853,9 +854,9 @@ static int cxusb_medion_v_start_streaming(struct vb2_queue *q,
 		goto ret_unstream_cx;
 	}
 
-	if (cxdev->raw_mode)
+	if (cxdev->raw_mode) {
 		npackets = CXUSB_VIDEO_MAX_FRAME_PKTS;
-	else {
+	} else {
 		ret = cxusb_medion_v_ss_auxbuf_alloc(cxdev, &npackets);
 		if (ret != 0)
 			goto ret_unstream_md;
@@ -873,16 +874,16 @@ static int cxusb_medion_v_start_streaming(struct vb2_queue *q,
 		 */
 		streambuf = kmalloc(npackets * CXUSB_VIDEO_PKT_SIZE,
 				    GFP_KERNEL);
-		if (streambuf == NULL) {
+		if (!streambuf) {
 			if (i < 2) {
 				ret = -ENOMEM;
 				goto ret_freeab;
-			} else
+			}
 			break;
 		}
 
 		surb = usb_alloc_urb(npackets, GFP_KERNEL);
-		if (surb == NULL) {
+		if (!surb) {
 			kfree(streambuf);
 			ret = -ENOMEM;
 			goto ret_freeu;
@@ -922,7 +923,7 @@ static int cxusb_medion_v_start_streaming(struct vb2_queue *q,
 	}
 
 	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
-		if (cxdev->streamurbs[i] != NULL) {
+		if (cxdev->streamurbs[i]) {
 			ret = usb_submit_urb(cxdev->streamurbs[i],
 					     GFP_KERNEL);
 			if (ret != 0)
@@ -977,7 +978,7 @@ static void cxusb_medion_v_stop_streaming(struct vb2_queue *q)
 	mutex_unlock(cxdev->videodev->lock);
 
 	for (i = 0; i < CXUSB_VIDEO_URBS; i++)
-		if (cxdev->streamurbs[i] != NULL)
+		if (cxdev->streamurbs[i])
 			usb_kill_urb(cxdev->streamurbs[i]);
 
 	flush_work(&cxdev->urbwork);
@@ -1771,7 +1772,7 @@ static int cxusb_medion_register_analog_video(struct dvb_usb_device *dvbdev)
 	}
 
 	cxdev->videodev = video_device_alloc();
-	if (cxdev->videodev == NULL) {
+	if (!cxdev->videodev) {
 		dev_err(&dvbdev->udev->dev, "video device alloc failed\n");
 		ret = -ENOMEM;
 		goto ret_qrelease;
@@ -1813,7 +1814,7 @@ static int cxusb_medion_register_analog_radio(struct dvb_usb_device *dvbdev)
 	int ret;
 
 	cxdev->radiodev = video_device_alloc();
-	if (cxdev->radiodev == NULL) {
+	if (!cxdev->radiodev) {
 		dev_err(&dvbdev->udev->dev, "radio device alloc failed\n");
 		return -ENOMEM;
 	}
@@ -1849,7 +1850,7 @@ static int cxusb_medion_register_analog_subdevs(struct dvb_usb_device *dvbdev)
 	cxdev->cx25840 = v4l2_i2c_new_subdev(&cxdev->v4l2dev,
 					     &dvbdev->i2c_adap,
 					     "cx25840", 0x44, NULL);
-	if (cxdev->cx25840 == NULL) {
+	if (!cxdev->cx25840) {
 		dev_err(&dvbdev->udev->dev, "cx25840 not found\n");
 		return -ENODEV;
 	}
@@ -1882,7 +1883,7 @@ static int cxusb_medion_register_analog_subdevs(struct dvb_usb_device *dvbdev)
 	cxdev->tuner = v4l2_i2c_new_subdev(&cxdev->v4l2dev,
 					   &dvbdev->i2c_adap,
 					   "tuner", 0x61, NULL);
-	if (cxdev->tuner == NULL) {
+	if (!cxdev->tuner) {
 		dev_err(&dvbdev->udev->dev, "tuner not found\n");
 		return -ENODEV;
 	}
@@ -1898,7 +1899,7 @@ static int cxusb_medion_register_analog_subdevs(struct dvb_usb_device *dvbdev)
 	cxdev->tda9887 = v4l2_i2c_new_subdev(&cxdev->v4l2dev,
 					     &dvbdev->i2c_adap,
 					     "tuner", 0x43, NULL);
-	if (cxdev->tda9887 == NULL) {
+	if (!cxdev->tda9887) {
 		dev_err(&dvbdev->udev->dev, "tda9887 not found\n");
 		return -ENODEV;
 	}