From 63e51fd708f511a5989da04c669647993bc1a512 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 6 Jun 2013 14:20:19 +0200 Subject: [PATCH] ALSA: hda - Don't take unresponsive D3 transition too serious When a codec is powered off, some systems don't respond properly after D3 FG transition, while the driver still expects the response and tries to fall back to different modes (polling and single-cmd). When the fallback happens, the driver stays in that mode, and falling back to the single-cmd mode means it'll loose the unsol event handling, too. The unresponsiveness at D3 isn't too serious, thus this fallback is mostly superfluous. We can gracefully ignore the error there so that the driver keeps the normal operation mode. This patch adds a new bit flag for codec read/write, set in the power transition stage, which is notified to the controller driver via a new bus->no_response_fallback flag. Signed-off-by: Takashi Iwai --- Reading git-format-patch failed