disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/media/usb/dvb-usb-v2/az6007.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Driver for AzureWave 6007 DVB-C/T USB2.0 and clones
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  *
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@@ -10,15 +11,6 @@
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  * Copyright (c) 2010-2012 Mauro Carvalho Chehab
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  *	Driver modified by in order to work with upstream drxk driver, and
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  *	tons of bugs got fixed, and converted to use dvb-usb-v2.
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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 under version 2 of the License.
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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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15
 
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 #include "drxk.h"
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@@ -210,7 +202,8 @@
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 	unsigned code;
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 	enum rc_proto proto;
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-	az6007_read(d, AZ6007_READ_IR, 0, 0, st->data, 10);
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+	if (az6007_read(d, AZ6007_READ_IR, 0, 0, st->data, 10) < 0)
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+		return -EIO;
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 	if (st->data[1] == 0x44)
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 		return 0;
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@@ -795,6 +788,10 @@
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 			if (az6007_xfer_debug)
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 				printk(KERN_DEBUG "az6007: I2C W addr=0x%x len=%d\n",
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 				       addr, msgs[i].len);
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+			if (msgs[i].len < 1) {
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+				ret = -EIO;
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+				goto err;
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+			}
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 			req = AZ6007_I2C_WR;
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 			index = msgs[i].buf[0];
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 			value = addr | (1 << 8);
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@@ -809,6 +806,10 @@
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 			if (az6007_xfer_debug)
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 				printk(KERN_DEBUG "az6007: I2C R addr=0x%x len=%d\n",
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 				       addr, msgs[i].len);
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+			if (msgs[i].len < 1) {
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+				ret = -EIO;
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+				goto err;
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+			}
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 			req = AZ6007_I2C_RD;
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 			index = msgs[i].buf[0];
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 			value = addr;