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FAILED: patch "[PATCH] ALSA: hda/ca0132 - Fix work handling in delayed HP detection" failed to apply to 4.4-stable tree

PATCH [email protected] 1 participant 1 message Dec 23, 2019

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The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 42fb6b1d41eb5905d77c06cad2e87b70289bdb76 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <[email protected]>
Date: Fri, 13 Dec 2019 09:51:11 +0100
Subject: [PATCH] ALSA: hda/ca0132 - Fix work handling in delayed HP detection

CA0132 has the delayed HP jack detection code that is invoked from the unsol handler, but it does a few weird things: it contains the cancel of a work inside the work handler, and yet it misses the cancel-sync call at (runtime-)suspend. This patch addresses those issues.

Fixes 15c2b3cc09a3 ("ALSA: hda/ca0132 - Fix possible workqueue stall")
Cc <[email protected]>
Link https://lore.kernel.org/r/[email protected] open here
Signed-off-by Takashi Iwai <[email protected]>
sound/pci/hda/patch_ca0132.c +14 -2
index 8d0209fff8f5..32ed46464af7 100644
@@ -7607,11 +7607,10 @@ static void hp_callback(struct hda_codec *codec, struct hda_jack_callback *cb)
 	/* Delay enabling the HP amp, to let the mic-detection
 	 * state machine run.
 	 */
-	cancel_delayed_work(&spec->unsol_hp_work);
-	schedule_delayed_work(&spec->unsol_hp_work, msecs_to_jiffies(500));
 	tbl = snd_hda_jack_tbl_get(codec, cb->nid);
 	if (tbl)
 		tbl->block_report = 1;
+	schedule_delayed_work(&spec->unsol_hp_work, msecs_to_jiffies(500));
 }
 
 static void amic_callback(struct hda_codec *codec, struct hda_jack_callback *cb)

@@ -8457,12 +8456,25 @@ static void ca0132_reboot_notify(struct hda_codec *codec)
 	codec->patch_ops.free(codec);
 }
 
+#ifdef CONFIG_PM
+static int ca0132_suspend(struct hda_codec *codec)
+{
+	struct ca0132_spec *spec = codec->spec;
+
+	cancel_delayed_work_sync(&spec->unsol_hp_work);
+	return 0;
+}
+#endif
+
 static const struct hda_codec_ops ca0132_patch_ops = {
 	.build_controls = ca0132_build_controls,
 	.build_pcms = ca0132_build_pcms,
 	.init = ca0132_init,
 	.free = ca0132_free,
 	.unsol_event = snd_hda_jack_unsol_event,
+#ifdef CONFIG_PM
+	.suspend = ca0132_suspend,
+#endif
 	.reboot_notify = ca0132_reboot_notify,
 };