brcmfmac: fix interface sanity check

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commit 3428fbcd6e 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: 71bb244ba2 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Johan Hovold 2019-12-10 12:44:22 +01:00 • committed by Greg Kroah-Hartman

parent b305919be2

commit 1097857d6f

1 changed files with 2 additions and 2 deletions

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drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c

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