Patch "ALSA: hda - set input_path bitmap to zero after moving it to new place" has been added to the 3.18-stable tree

Patch "ALSA: hda - set input_path bitmap to zero after moving it to new place" has been added to the 3.18-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ALSA: hda - set input_path bitmap to zero after moving it to new place

to the 3.18-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     alsa-hda-set-input_path-bitmap-to-zero-after-moving-it-to-new-place.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From a8f20fd25bdce81a8e41767c39f456d346b63427 Mon Sep 17 00:00:00 2001
From: Hui Wang <hui.wang@canonical.com>
Date: Wed, 28 Jun 2017 08:59:16 +0800
Subject: ALSA: hda - set input_path bitmap to zero after moving it to new place

From: Hui Wang <hui.wang@canonical.com>

commit a8f20fd25bdce81a8e41767c39f456d346b63427 upstream.

Recently we met a problem, the codec has valid adcs and input pins,
and they can form valid input paths, but the driver does not build
valid controls for them like "Mic boost", "Capture Volume" and
"Capture Switch".

Through debugging, I found the driver needs to shrink the invalid
adcs and input paths for this machine, so it will move the whole
column bitmap value to the previous column, after moving it, the
driver forgets to set the original column bitmap value to zero, as a
result, the driver will invalidate the path whose index value is the
original colume bitmap value. After executing this function, all
valid input paths are invalidated by a mistake, there are no any
valid input paths, so the driver won't build controls for them.

Fixes: 3a65bcdc577a ("ALSA: hda - Fix inconsistent input_paths after ADC reduction")
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/hda_generic.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -3079,6 +3079,7 @@ static int check_dyn_adc_switch(struct h
 						spec->input_paths[i][nums]);
 					spec->input_paths[i][nums] =
 						spec->input_paths[i][n];
+					spec->input_paths[i][n] = 0;
 				}
 			}
 			nums++;


Patches currently in stable-queue which might be from hui.wang@canonical.com are

queue-3.18/alsa-hda-set-input_path-bitmap-to-zero-after-moving-it-to-new-place.patch