disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/media/usb/dvb-usb/af9005.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* DVB USB compliant Linux driver for the Afatech 9005
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  * USB1.1 DVB-T receiver.
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  *
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@@ -5,17 +6,7 @@
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  *
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  * Thanks to Afatech who kindly provided information.
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  *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * see Documentation/media/dvb-drivers/dvb-usb.rst for more information
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+ * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
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  */
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 #include "af9005.h"
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12
 
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@@ -431,6 +422,10 @@
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 		if (ret == 0)
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 			ret = 2;
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 	} else {
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+		if (msg[0].len < 2) {
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+			ret = -EOPNOTSUPP;
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+			goto unlock;
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+		}
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 		/* write one or more registers */
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 		reg = msg[0].buf[0];
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 		addr = msg[0].addr;
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@@ -440,6 +435,7 @@
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 			ret = 1;
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 	}
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+unlock:
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 	mutex_unlock(&d->i2c_mutex);
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 	return ret;
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 }
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@@ -845,7 +841,7 @@
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841
 
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 	/* deb_info("rc_query\n"); */
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 	st->data[0] = 3;		/* rest of packet length low */
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-	st->data[1] = 0;		/* rest of packet lentgh high */
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+	st->data[1] = 0;		/* rest of packet length high */
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 	st->data[2] = 0x40;		/* read remote */
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 	st->data[3] = 1;		/* rest of packet length */
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 	st->data[4] = seq = st->sequence++;	/* sequence number */
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@@ -964,8 +960,8 @@
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 }
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 static int af9005_identify_state(struct usb_device *udev,
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-				 struct dvb_usb_device_properties *props,
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-				 struct dvb_usb_device_description **desc,
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+				 const struct dvb_usb_device_properties *props,
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+				 const struct dvb_usb_device_description **desc,
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 				 int *cold)
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 {
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 	int ret;