ALSA: hda - Fix the cmd cache keys for amp verbs

Fix the key value generation for get/set amp verbs.  The upper bits of
the parameter have to be combined with the verb value to be unique for
each direction/index of amp access.

This fixes the resume problem on some hardwares like Macbook after
the channel mode is changed.

Tested-by: Johannes Berg <johannes@sipsolutions.net>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 5 insertions, 1 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index a4e5e5952115..fd6e6f337d10 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2250,7 +2250,11 @@ int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
         err = bus->ops.command(bus, res);
         if (!err) {
                 struct hda_cache_head *c;
-                u32 key = build_cmd_cache_key(nid, verb);
+                u32 key;
+                /* parm may contain the verb stuff for get/set amp */
+                verb = verb | (parm >> 8);
+                parm &= 0xff;
+                key = build_cmd_cache_key(nid, verb);
                 c = get_alloc_hash(&codec->cmd_cache, key);
                 if (c)
                         c->val = parm;