Patch "ALSA: hda - set input_path bitmap to zero after moving it to new place" has been added to the 4.4-stable tree

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 4.4-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-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Hui Wang <[email protected]>
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 <[email protected]>

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.

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

@@ -3190,6 +3190,7 @@ 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 [email protected] are

queue-4.4/alsa-hda-set-input_path-bitmap-to-zero-after-moving-it-to-new-place.patch