Patch "ALSA: hda - Fix lost 4k BDL boundary workaround" has been added to the 4.3-stable tree

Patch "ALSA: hda - Fix lost 4k BDL boundary workaround" has been added to the 4.3-stable tree

[gregkh]

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

    ALSA: hda - Fix lost 4k BDL boundary workaround

to the 4.3-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-fix-lost-4k-bdl-boundary-workaround.patch
and it can be found in the queue-4.3 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 de1ab6af5c3d92c0a031083962a7ff270cf301b7 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 2 Nov 2015 17:35:34 +0100
Subject: ALSA: hda - Fix lost 4k BDL boundary workaround

From: Takashi Iwai <tiwai@suse.de>

commit de1ab6af5c3d92c0a031083962a7ff270cf301b7 upstream.

During the migration to HDA core code, we lost the workaround for 4k
BDL boundary.  The flag exists in the new hdac_bus, but it's never
set.  This resulted in the sudden sound stall on some controllers that
require this workaround like Creative Recon3D.

This patch fixes the issue by setting the flag for such controllers
properly.

Fixes: ccc98865aa44 ('ALSA: hda - Migrate more hdac_stream codes')
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/hda_controller.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -1059,6 +1059,9 @@ int azx_bus_init(struct azx *chip, const
 		bus->needs_damn_long_delay = 1;
 	}
 
+	if (chip->driver_caps & AZX_DCAPS_4K_BDLE_BOUNDARY)
+		bus->core.align_bdle_4k = true;
+
 	/* AMD chipsets often cause the communication stalls upon certain
 	 * sequence like the pin-detection.  It seems that forcing the synced
 	 * access works around the stall.  Grrr...


Patches currently in stable-queue which might be from tiwai@suse.de are

queue-4.3/alsa-hda-realtek-dell-xps-one-alc3260-speaker-no-sound-after-resume-back.patch
queue-4.3/alsa-fireworks-bebob-oxfw-dice-enable-to-make-as-built-in.patch
queue-4.3/alsa-hda-add-intel-lewisburg-device-ids-audio.patch
queue-4.3/alsa-hda-disable-64bit-address-for-creative-hda-controllers.patch
queue-4.3/alsa-hda-fix-lost-4k-bdl-boundary-workaround.patch
queue-4.3/alsa-hda-apply-pin-fixup-for-hp-probook-6550b.patch