From: Johan Hovold johan@kernel.org
commit 3139b180906af43bc09bd3373fc2338a8271d9d9 upstream.
Make sure to use the current alternate setting when verifying the interface descriptors to avoid binding to an invalid interface.
Failing to do so could cause the driver to misbehave or trigger a WARN() in usb_submit_urb() that kernels with panic_on_warn set would choke on.
Fixes: dad0d04fa7ba ("rsi: Add RS9113 wireless driver") Cc: stable stable@vger.kernel.org # 3.15 Cc: Fariya Fatima fariyaf@gmail.com Signed-off-by: Johan Hovold johan@kernel.org Signed-off-by: Kalle Valo kvalo@codeaurora.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/wireless/rsi/rsi_91x_usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/rsi/rsi_91x_usb.c +++ b/drivers/net/wireless/rsi/rsi_91x_usb.c @@ -117,7 +117,7 @@ static int rsi_find_bulk_in_and_out_endp __le16 buffer_size; int ii, bin_found = 0, bout_found = 0;
- iface_desc = &(interface->altsetting[0]); + iface_desc = interface->cur_altsetting;
for (ii = 0; ii < iface_desc->desc.bNumEndpoints; ++ii) { endpoint = &(iface_desc->endpoint[ii].desc);