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author | Oleksij Rempel <linux@rempel-privat.de> | 2013-07-21 15:36:19 +0200 |
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committer | Ben Hutchings <ben@decadent.org.uk> | 2013-08-02 22:15:09 +0200 |
commit | 68a127fb3d6c045ae4e464e6e1c79c568c2aa031 (patch) | |
tree | 85025ce94b24741092bbc6608e37ab7f60d97aa7 /drivers/usb/serial | |
parent | 5829ddf034667a3e8ce3e853cae6139f66244313 (diff) | |
download | kernel_samsung_smdk4412-68a127fb3d6c045ae4e464e6e1c79c568c2aa031.zip kernel_samsung_smdk4412-68a127fb3d6c045ae4e464e6e1c79c568c2aa031.tar.gz kernel_samsung_smdk4412-68a127fb3d6c045ae4e464e6e1c79c568c2aa031.tar.bz2 |
xhci: fix null pointer dereference on ring_doorbell_for_active_rings
commit d66eaf9f89502971fddcb0de550b01fa6f409d83 upstream.
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 e9df17eb1408cfafa3d1844bfc7f22c7237b31b8 "USB: xhci:
Correct assumptions about number of rings per endpoint"
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/usb/serial')
0 files changed, 0 insertions, 0 deletions