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ath9k: fix storage endpoint lookup

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commit 0ef332951e upstream.

Make sure to use the current alternate setting when verifying the
storage interface descriptors to avoid submitting an URB to an invalid
endpoint.

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: 36bcce4306 ("ath9k_htc: Handle storage devices")
Cc: stable <stable@vger.kernel.org>     # 2.6.39
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>
This commit is contained in:
Johan Hovold
2019-12-10 12:44:20 +01:00
committed by Chris
parent f2aaebf257
commit c4236604e7
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/ath9k/hif_usb.c
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@@ -1213,7 +1213,7 @@ err_fw:
static int send_eject_command(struct usb_interface *interface)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct usb_host_interface *iface_desc = &interface->altsetting[0];
struct usb_host_interface *iface_desc = interface->cur_altsetting;
struct usb_endpoint_descriptor *endpoint;
unsigned char *cmd;
u8 bulk_out_ep;