tree 58b7978cc71089edcd15e47c92e3597288d9f19c
parent 557de5eb29caeab56c2f97b49eec02e32a2cbe32
author John W. Linville <linville@tuxdriver.com> 1282678054 -0400
committer John W. Linville <linville@tuxdriver.com> 1283198474 -0400

ath5k: check return value of ieee80211_get_tx_rate

This avoids a NULL pointer dereference as reported here:

	https://bugzilla.redhat.com/show_bug.cgi?id=625889

When the WARN condition is hit in ieee80211_get_tx_rate, it will return
NULL.  So, we need to check the return value and avoid dereferencing it
in that case.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: stable@kernel.org
Acked-by: Bob Copeland <me@bobcopeland.com>