From: David S. Miller Date: Mon, 4 Jul 2022 09:39:25 +0000 (+0100) Subject: Merge branch 'smsc95xx-deadlock' X-Git-Tag: v6.0-rc1~141^2~206 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5ee4bba272d171e797c1b3c7b5ff889c3a2f0ec9;p=thirdparty%2Fkernel%2Fstable.git Merge branch 'smsc95xx-deadlock' Lukas Wunner says: ==================== Deadlock no more in LAN95xx Second attempt at fixing a runtime resume deadlock in the LAN95xx USB driver: In short, the driver isn't using the "nopm" register accessors in portions of its runtime resume path, causing a deadlock. I'm fixing that by auto-detecting whether nopm accessors shall be used, instead of having to explicitly call them wherever it's necessary. As a byproduct, code size shrinks significantly (see diffstat below). Back in April I submitted a first attempt which was rejected by Alan Stern: https://lore.kernel.org/all/6710d8c18ff54139cdc538763ba544187c5a0cee.1651041411.git.lukas@wunner.de/ That approach only detected whether a PM callback is running concurrently, not whether the access is performed by the PM callback. I've come up with a different approach which should resolve the objection (see patch [1/3]). ==================== Signed-off-by: David S. Miller --- 5ee4bba272d171e797c1b3c7b5ff889c3a2f0ec9