diff options
| -rw-r--r-- | drivers/media/usb/s2255/s2255drv.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/media/usb/s2255/s2255drv.c b/drivers/media/usb/s2255/s2255drv.c index c3a0e87066eb..f7bb78c1873c 100644 --- a/drivers/media/usb/s2255/s2255drv.c +++ b/drivers/media/usb/s2255/s2255drv.c @@ -1901,19 +1901,30 @@ static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request, s32 TransferBufferLength, int bOut) { int r; + unsigned char *buf; + + buf = kmalloc(TransferBufferLength, GFP_KERNEL); + if (!buf) + return -ENOMEM; + if (!bOut) { r = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, - Value, Index, TransferBuffer, + Value, Index, buf, TransferBufferLength, HZ * 5); + + if (r >= 0) + memcpy(TransferBuffer, buf, TransferBufferLength); } else { + memcpy(buf, TransferBuffer, TransferBufferLength); r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE, - Value, Index, TransferBuffer, + Value, Index, buf, TransferBufferLength, HZ * 5); } + kfree(buf); return r; } |