diff options
Diffstat (limited to 'drivers/media/usb/gspca/sonixb.c')
| -rw-r--r-- | drivers/media/usb/gspca/sonixb.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/media/usb/gspca/sonixb.c b/drivers/media/usb/gspca/sonixb.c index 5f3f2979540a..4d655e2da9cb 100644 --- a/drivers/media/usb/gspca/sonixb.c +++ b/drivers/media/usb/gspca/sonixb.c @@ -1,19 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * sonix sn9c102 (bayer) library * * Copyright (C) 2009-2011 Jean-François Moine <http://moinejf.free.fr> * Copyright (C) 2003 2004 Michel Xhaard mxhaard@magic.fr * Add Pas106 Stefano Mozzi (C) 2004 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ /* Some documentation on known sonixb registers: @@ -121,7 +112,7 @@ struct sensor_data { /* We calculate the autogain at the end of the transfer of a frame, at this moment a frame with the old settings is being captured and transmitted. So - if we adjust the gain or exposure we must ignore atleast the next frame for + if we adjust the gain or exposure we must ignore at least the next frame for the new settings to come into effect before doing any other adjustments. */ #define AUTOGAIN_IGNORE_FRAMES 1 @@ -462,6 +453,11 @@ static void reg_r(struct gspca_dev *gspca_dev, dev_err(gspca_dev->v4l2_dev.dev, "Error reading register %02x: %d\n", value, res); gspca_dev->usb_err = res; + /* + * Make sure the result is zeroed to avoid uninitialized + * values. + */ + gspca_dev->usb_buf[0] = 0; } } @@ -757,7 +753,7 @@ static void setexposure(struct gspca_dev *gspca_dev) /* Don't allow this to get below 10 when using autogain, the steps become very large (relatively) when below 10 causing - the image to oscilate from much too dark, to much too bright + the image to oscillate from much too dark, to much too bright and back again. */ if (gspca_dev->autogain->val && reg10 < 10) reg10 = 10; |