tree 49bddde31fbc445841064fc2a57325611414d193
parent 098e5039c8e7a35c465876f5b2ad4376839c9106
author Johannes Berg <johannes.berg@intel.com> 1393465976 +0800
committer chrmhoffmann <chrmhoffmann@gmail.com> 1586074778 +0200

iwlwifi: protect SRAM debugfs

commit 4fc79db178f0a0ede479b4713e00df2d106028b3 upstream.

If the device is not started, we can't read its
SRAM and attempting to do so will cause issues.
Protect the debugfs read.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
[wujg: Backported to 3.4: adjust context]
Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>