Skip to content
Commit d66eaf9f authored by Oleksij Rempel's avatar Oleksij Rempel Committed by Sarah Sharp
Browse files

xhci: fix null pointer dereference on ring_doorbell_for_active_rings



in some cases where device is attched to xhci port and do not responding,
for example ath9k_htc with stalled firmware, kernel will
crash on ring_doorbell_for_active_rings.
This patch check if pointer exist before it is used.

This patch should be backported to kernels as old as 2.6.35, that
contain the commit e9df17eb "USB: xhci:
Correct assumptions about number of rings per endpoint"

Signed-off-by: default avatarOleksij Rempel <linux@rempel-privat.de>
Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
parent 07f3cb7c
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment