add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/media/usb/pwc/pwc-ctrl.c
..
..
@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /* Driver for Philips webcam
2
3
    Functions that send various control messages to the webcam, including
3
4
    video modes.
..
..
@@ -15,19 +16,6 @@
15
16
    The decompression routines have been implemented by reverse-engineering the
16
17
    Nemosoft binary pwcx module. Caveat emptor.
17
18
 
18
-   This program is free software; you can redistribute it and/or modify
19
-   it under the terms of the GNU General Public License as published by
20
-   the Free Software Foundation; either version 2 of the License, or
21
-   (at your option) any later version.
22
-
23
-   This program is distributed in the hope that it will be useful,
24
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
25
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
26
-   GNU General Public License for more details.
27
-
28
-   You should have received a copy of the GNU General Public License
29
-   along with this program; if not, write to the Free Software
30
-   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
31
19
 */
32
20
 
33
21
 /*
..
..
@@ -242,14 +230,14 @@
242
230
 	fps = (frames / 5) - 1;
243
231
 
244
232
 	/* Find a supported framerate with progressively higher compression */
245
-	pChoose = NULL;
246
-	while (*compression <= 3) {
233
+	do {
247
234
 		pChoose = &Timon_table[size][fps][*compression];
248
235
 		if (pChoose->alternate != 0)
249
236
 			break;
250
237
 		(*compression)++;
251
-	}
252
-	if (pChoose == NULL || pChoose->alternate == 0)
238
+	} while (*compression <= 3);
239
+
240
+	if (pChoose->alternate == 0)
253
241
 		return -ENOENT; /* Not supported. */
254
242
 
255
243
 	if (send_to_cam)
..
..
@@ -279,7 +267,7 @@
279
267
 static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int pixfmt,
280
268
 				int frames, int *compression, int send_to_cam)
281
269
 {
282
-	const struct Kiara_table_entry *pChoose = NULL;
270
+	const struct Kiara_table_entry *pChoose;
283
271
 	int fps, ret = 0;
284
272
 
285
273
 	if (size >= PSZ_MAX || *compression < 0 || *compression > 3)
..
..
@@ -293,13 +281,14 @@
293
281
 	fps = (frames / 5) - 1;
294
282
 
295
283
 	/* Find a supported framerate with progressively higher compression */
296
-	while (*compression <= 3) {
284
+	do {
297
285
 		pChoose = &Kiara_table[size][fps][*compression];
298
286
 		if (pChoose->alternate != 0)
299
287
 			break;
300
288
 		(*compression)++;
301
-	}
302
-	if (pChoose == NULL || pChoose->alternate == 0)
289
+	} while (*compression <= 3);
290
+
291
+	if (pChoose->alternate == 0)
303
292
 		return -ENOENT; /* Not supported. */
304
293
 
305
294
 	/* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */
..
..
@@ -534,7 +523,7 @@
534
523
 #ifdef CONFIG_USB_PWC_DEBUG
535
524
 int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor)
536
525
 {
537
-	int ret = -1, request;
526
+	int ret, request;
538
527
 
539
528
 	if (pdev->type < 675)
540
529
 		request = SENSOR_TYPE_FORMATTER1;