mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-28 17:48:58 +00:00
41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
|
From 3428fbcd6e6c0850b1a8b2a12082b7b2aabb3da3 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Johan Hovold <johan@kernel.org>
|
||
|
|
Date: Tue, 10 Dec 2019 12:44:22 +0100
|
||
|
|
Subject: [PATCH] brcmfmac: 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: 71bb244ba2fd ("brcm80211: fmac: add USB support for bcm43235/6/8 chipsets")
|
||
|
|
Cc: stable <stable@vger.kernel.org> # 3.4
|
||
|
|
Cc: Arend van Spriel <arend@broadcom.com>
|
||
|
|
Signed-off-by: Johan Hovold <johan@kernel.org>
|
||
|
|
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
||
|
|
---
|
||
|
|
drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 4 ++--
|
||
|
|
1 file changed, 2 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
|
||
|
|
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
|
||
|
|
@@ -1348,7 +1348,7 @@ brcmf_usb_probe(struct usb_interface *in
|
||
|
|
goto fail;
|
||
|
|
}
|
||
|
|
|
||
|
|
- desc = &intf->altsetting[0].desc;
|
||
|
|
+ desc = &intf->cur_altsetting->desc;
|
||
|
|
if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
|
||
|
|
(desc->bInterfaceSubClass != 2) ||
|
||
|
|
(desc->bInterfaceProtocol != 0xff)) {
|
||
|
|
@@ -1361,7 +1361,7 @@ brcmf_usb_probe(struct usb_interface *in
|
||
|
|
|
||
|
|
num_of_eps = desc->bNumEndpoints;
|
||
|
|
for (ep = 0; ep < num_of_eps; ep++) {
|
||
|
|
- endpoint = &intf->altsetting[0].endpoint[ep].desc;
|
||
|
|
+ endpoint = &intf->cur_altsetting->endpoint[ep].desc;
|
||
|
|
endpoint_num = usb_endpoint_num(endpoint);
|
||
|
|
if (!usb_endpoint_xfer_bulk(endpoint))
|
||
|
|
continue;
|