Commit 39a4281c authored by Johan Hovold's avatar Johan Hovold Committed by Kalle Valo
Browse files

rtl8xxxu: fix interface sanity check

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: 26f1fad2

 ("New driver: rtl8xxxu (mac80211)")
Cc: stable <>     # 4.4
Cc: Jes Sorensen <>
Signed-off-by: default avatarJohan Hovold <>
Signed-off-by: default avatarKalle Valo <>
parent b73e05aa
......@@ -6384,7 +6384,7 @@ static int rtl8xxxu_parse_usb(struct rtl8xxxu_priv *priv,
u8 dir, xtype, num;
int ret = 0;
host_interface = &interface->altsetting[0];
host_interface = interface->cur_altsetting;
interface_desc = &host_interface->desc;
endpoints = interface_desc->bNumEndpoints;
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