]> git.karo-electronics.de Git - linux-beck.git/commit
mei: request async autosuspend at the end of enumeration
authorAlexander Usyskin <alexander.usyskin@intel.com>
Thu, 24 Nov 2016 11:34:02 +0000 (13:34 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 29 Nov 2016 19:15:30 +0000 (20:15 +0100)
commitd5f8e166c25750adc147b0adf64a62a91653438a
tree6edbb31bad5d94b19ca22b5be00bc30fd495a295
parentec98960e0bbbe49b569b09c14ccd82efeb232dc8
mei: request async autosuspend at the end of enumeration

pm_runtime_autosuspend can take synchronous or asynchronous
paths, Because we are calling pm_runtime_mark_last_busy just before
this most of the cases it takes the asynchronous way. However,
when the FW or driver resets during already running runtime suspend,
the call will result in calling to the driver's rpm callback and results
in a deadlock on device_lock.
The simplest fix is to replace pm_runtime_autosuspend with
asynchronous pm_request_autosuspend.

Cc: <stable@vger.kernel.org> # 4.4+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/misc/mei/client.c