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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c 
 kernel/drivers/media/dvb-frontends/rtl2832_sdr.c
....@@ -1,25 +1,11 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Realtek RTL2832U SDR driver
34  *
45  * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
56  *
6
- *    This program is free software; you can redistribute it and/or modify
7
- *    it under the terms of the GNU General Public License as published by
8
- *    the Free Software Foundation; either version 2 of the License, or
9
- *    (at your option) any later version.
10
- *
11
- *    This program is distributed in the hope that it will be useful,
12
- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
13
- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
- *    GNU General Public License for more details.
15
- *
16
- *    You should have received a copy of the GNU General Public License along
17
- *    with this program; if not, write to the Free Software Foundation, Inc.,
18
- *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19
- *
207  * GNU Radio plugin "gr-kernel" for device usage will be on:
21
- * http://git.linuxtv.org/anttip/gr-kernel.git
22
- *
8
+ * https://git.linuxtv.org/anttip/gr-kernel.git
239  */
2410 
2511 #include "rtl2832_sdr.h"
....@@ -95,11 +81,9 @@
9581 
9682 static struct rtl2832_sdr_format formats[] = {
9783 	{
98
-		.name		= "Complex U8",
9984 		.pixelformat	= V4L2_SDR_FMT_CU8,
10085 		.buffersize	= BULK_BUFFER_SIZE,
10186 	}, {
102
-		.name		= "Complex U16LE (emulated)",
10387 		.pixelformat	= V4L2_SDR_FMT_CU16LE,
10488 		.buffersize	= BULK_BUFFER_SIZE * 2,
10589 	},
....@@ -439,12 +423,9 @@
439423 
440424 	dev_dbg(&pdev->dev, "\n");
441425 
442
-	strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
443
-	strlcpy(cap->card, dev->vdev.name, sizeof(cap->card));
426
+	strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
427
+	strscpy(cap->card, dev->vdev.name, sizeof(cap->card));
444428 	usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
445
-	cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
446
-			V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
447
-	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
448429 	return 0;
449430 }
450431 
....@@ -471,7 +452,7 @@
471452 {
472453 	struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
473454 
474
-	/* Don't allow queing new buffers after device disconnection */
455
+	/* Don't allow queueing new buffers after device disconnection */
475456 	if (!dev->udev)
476457 		return -ENODEV;
477458 
....@@ -976,7 +957,7 @@
976957 	dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type);
977958 
978959 	if (v->index == 0) {
979
-		strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
960
+		strscpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
980961 		v->type = V4L2_TUNER_ADC;
981962 		v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
982963 		v->rangelow =   300000;
....@@ -986,7 +967,7 @@
986967 		   V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) {
987968 		ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v);
988969 	} else if (v->index == 1) {
989
-		strlcpy(v->name, "RF: <unknown>", sizeof(v->name));
970
+		strscpy(v->name, "RF: <unknown>", sizeof(v->name));
990971 		v->type = V4L2_TUNER_RF;
991972 		v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
992973 		v->rangelow =    50000000;
....@@ -1133,7 +1114,6 @@
11331114 	if (f->index >= dev->num_formats)
11341115 		return -EINVAL;
11351116 
1136
-	strlcpy(f->description, formats[f->index].name, sizeof(f->description));
11371117 	f->pixelformat = formats[f->index].pixelformat;
11381118 
11391119 	return 0;
....@@ -1256,6 +1236,8 @@
12561236 	.release                  = video_device_release_empty,
12571237 	.fops                     = &rtl2832_sdr_fops,
12581238 	.ioctl_ops                = &rtl2832_sdr_ioctl_ops,
1239
+	.device_caps		  = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
1240
+				    V4L2_CAP_READWRITE | V4L2_CAP_TUNER,
12591241 };
12601242 
12611243 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
....@@ -1394,7 +1376,8 @@
13941376 	case RTL2832_SDR_TUNER_E4000:
13951377 		v4l2_ctrl_handler_init(&dev->hdl, 9);
13961378 		if (subdev)
1397
-			v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, NULL);
1379
+			v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler,
1380
+					      NULL, true);
13981381 		break;
13991382 	case RTL2832_SDR_TUNER_R820T:
14001383 	case RTL2832_SDR_TUNER_R828D:
....@@ -1423,11 +1406,12 @@
14231406 		v4l2_ctrl_handler_init(&dev->hdl, 2);
14241407 		if (subdev)
14251408 			v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler,
1426
-					      NULL);
1409
+					      NULL, true);
14271410 		break;
14281411 	default:
14291412 		v4l2_ctrl_handler_init(&dev->hdl, 0);
14301413 		dev_err(&pdev->dev, "Unsupported tuner\n");
1414
+		ret = -ENODEV;
14311415 		goto err_v4l2_ctrl_handler_free;
14321416 	}
14331417 	if (dev->hdl.error) {