4.11-stable review patch. If anyone has any objections, please let me know.
------------------ From: Malcolm Priestley <[email protected]> commit 05c0cf88bec588a7cb34de569acd871ceef26760 upstream. Since 4.9 mandated USB buffers to be heap allocated. This causes the driver to fail. Create buffer for USB transfers. Signed-off-by: Malcolm Priestley <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/staging/vt6656/usbpipe.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) --- a/drivers/staging/vt6656/usbpipe.c +++ b/drivers/staging/vt6656/usbpipe.c @@ -75,15 +75,28 @@ int vnt_control_in(struct vnt_private *p u16 index, u16 length, u8 *buffer) { int status; + u8 *usb_buffer; if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) return STATUS_FAILURE; mutex_lock(&priv->usb_lock); + usb_buffer = kmalloc(length, GFP_KERNEL); + if (!usb_buffer) { + mutex_unlock(&priv->usb_lock); + return -ENOMEM; + } + status = usb_control_msg(priv->usb, - usb_rcvctrlpipe(priv->usb, 0), request, 0xc0, value, - index, buffer, length, USB_CTL_WAIT); + usb_rcvctrlpipe(priv->usb, 0), + request, 0xc0, value, + index, usb_buffer, length, USB_CTL_WAIT); + + if (status == length) + memcpy(buffer, usb_buffer, length); + + kfree(usb_buffer); mutex_unlock(&priv->usb_lock);
