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zd1211rw: fix storage endpoint lookup

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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: a1030e92c1 ("[PATCH] zd1211rw: Convert installer CDROM device into WLAN device")
Cc: stable <stable@vger.kernel.org>     # 2.6.19
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Johan Hovold 2019-12-10 12:44:26 +01:00 committed by Kalle Valo
parent 3139b18090
commit 2d68bb2687
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/zydas/zd1211rw/zd_usb.c
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@ -1263,7 +1263,7 @@ static void print_id(struct usb_device *udev)
static int eject_installer(struct usb_interface *intf)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_host_interface *iface_desc = &intf->altsetting[0];
struct usb_host_interface *iface_desc = intf->cur_altsetting;
struct usb_endpoint_descriptor *endpoint;
unsigned char *cmd;
u8 bulk_out_ep;