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V4L/DVB (8192): Try to fix a reg_w() bug

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Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hans de Goede 2008-07-03 08:15:22 -03:00 committed by Mauro Carvalho Chehab
parent d646e70181
commit 0d2a722dda
1 changed files with 24 additions and 17 deletions
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41
drivers/media/video/gspca/sonixb.c
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@ -24,8 +24,8 @@
#include "gspca.h"
#define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 0)
static const char version[] = "2.1.0";
#define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 3)
static const char version[] = "2.1.3";
MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
MODULE_DESCRIPTION("GSPCA/SN9C102 USB Camera Driver");
@ -336,13 +336,22 @@ static void reg_w(struct usb_device *dev,
const __u8 *buffer,
__u16 len)
{
__u8 tmpbuf[32];
#ifdef CONFIG_VIDEO_ADV_DEBUG
if (len > sizeof tmpbuf) {
PDEBUG(D_ERR|D_PACK, "reg_w: buffer overflow");
return;
}
#endif
memcpy(tmpbuf, buffer, len);
usb_control_msg(dev,
usb_sndctrlpipe(dev, 0),
0x08, /* request */
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
value,
0, /* index */
(__u8 *) buffer, len,
tmpbuf, len,
500);
}
@ -747,22 +756,20 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
unsigned char *data, /* isoc packet */
int len) /* iso packet length */
{
int p;
int i;
if (len > 6 && len < 24) {
for (p = 0; p < len - 6; p++) {
if (data[0 + p] == 0xff
&& data[1 + p] == 0xff
&& data[2 + p] == 0x00
&& data[3 + p] == 0xc4
&& data[4 + p] == 0xc4
&& data[5 + p] == 0x96) { /* start of frame */
frame = gspca_frame_add(gspca_dev,
LAST_PACKET,
frame,
data, 0);
data += 12;
len -= 12;
for (i = 0; i < len - 6; i++) {
if (data[0 + i] == 0xff
&& data[1 + i] == 0xff
&& data[2 + i] == 0x00
&& data[3 + i] == 0xc4
&& data[4 + i] == 0xc4
&& data[5 + i] == 0x96) { /* start of frame */
frame = gspca_frame_add(gspca_dev, LAST_PACKET,
frame, data, 0);
data += i + 12;
len -= i + 12;
gspca_frame_add(gspca_dev, FIRST_PACKET,
frame, data, len);
return;