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2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/media/usb/dvb-usb-v2/ec168.c
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@@ -1,18 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * E3C EC168 DVB USB driver
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  *
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  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
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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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  */
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 #include "ec168.h"
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@@ -125,6 +115,10 @@
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 	while (i < num) {
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 		if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
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 			if (msg[i].addr == ec168_ec100_config.demod_address) {
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+				if (msg[i].len < 1) {
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+					i = -EOPNOTSUPP;
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+					break;
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+				}
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 				req.cmd = READ_DEMOD;
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 				req.value = 0;
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 				req.index = 0xff00 + msg[i].buf[0]; /* reg */
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@@ -141,6 +135,10 @@
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 			}
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 		} else {
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 			if (msg[i].addr == ec168_ec100_config.demod_address) {
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+				if (msg[i].len < 1) {
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+					i = -EOPNOTSUPP;
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+					break;
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+				}
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 				req.cmd = WRITE_DEMOD;
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 				req.value = msg[i].buf[1]; /* val */
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 				req.index = 0xff00 + msg[i].buf[0]; /* reg */
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@@ -149,6 +147,10 @@
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 				ret = ec168_ctrl_msg(d, &req);
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 				i += 1;
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 			} else {
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+				if (msg[i].len < 1) {
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+					i = -EOPNOTSUPP;
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+					break;
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+				}
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 				req.cmd = WRITE_I2C;
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 				req.value = msg[i].buf[0]; /* val */
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 				req.index = 0x0100 + msg[i].addr; /* I2C addr */
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@@ -319,7 +321,7 @@
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 /* DVB USB Driver stuff */
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 /* bInterfaceNumber 0 is HID
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  * bInterfaceNumber 1 is DVB-T */
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-static struct dvb_usb_device_properties ec168_props = {
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+static const struct dvb_usb_device_properties ec168_props = {
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 	.driver_name = KBUILD_MODNAME,
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 	.owner = THIS_MODULE,
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 	.adapter_nr = adapter_nr,
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@@ -342,22 +344,17 @@
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 	},
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 };
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-static const struct dvb_usb_driver_info ec168_driver_info = {
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-	.name = "E3C EC168 reference design",
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-	.props = &ec168_props,
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-};
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-
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 static const struct usb_device_id ec168_id[] = {
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-	{ USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168),
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-		.driver_info = (kernel_ulong_t) &ec168_driver_info },
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-	{ USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_2),
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-		.driver_info = (kernel_ulong_t) &ec168_driver_info },
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-	{ USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_3),
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-		.driver_info = (kernel_ulong_t) &ec168_driver_info },
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-	{ USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_4),
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-		.driver_info = (kernel_ulong_t) &ec168_driver_info },
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-	{ USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_5),
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-		.driver_info = (kernel_ulong_t) &ec168_driver_info },
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+	{ DVB_USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168,
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+		     &ec168_props, "E3C EC168 reference design", NULL)},
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+	{ DVB_USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_2,
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+		     &ec168_props, "E3C EC168 reference design", NULL)},
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+	{ DVB_USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_3,
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+		     &ec168_props, "E3C EC168 reference design", NULL)},
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+	{ DVB_USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_4,
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+		     &ec168_props, "E3C EC168 reference design", NULL)},
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+	{ DVB_USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_5,
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+		     &ec168_props, "E3C EC168 reference design", NULL)},
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 	{}
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 };
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 MODULE_DEVICE_TABLE(usb, ec168_id);