fixes for 4.4

Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/queue-4.4/alsa-hda-fix-pending-unsol-events-at-shutdown.patch b/queue-4.4/alsa-hda-fix-pending-unsol-events-at-shutdown.patch
new file mode 100644 (file)
index 0000000..392ba42
--- /dev/null
+++ b/queue-4.4/alsa-hda-fix-pending-unsol-events-at-shutdown.patch
@@ -0,0 +1,61 @@
+From dc202a73daac0276f18c8817472b6ae2237fbfc6 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Mon, 28 Oct 2019 11:58:03 +0100
+Subject: ALSA: hda - Fix pending unsol events at shutdown
+
+From: Takashi Iwai <tiwai@suse.de>
+
+[ Upstream commit ca58f55108fee41d87c9123f85ad4863e5de7f45 ]
+
+This is an alternative fix attemp for the issue reported in the commit
+caa8422d01e9 ("ALSA: hda: Flush interrupts on disabling") that was
+reverted later due to regressions.  Instead of tweaking the hardware
+disablement order and the enforced irq flushing, do calling
+cancel_work_sync() of the unsol work early enough, and explicitly
+ignore the unsol events during the shutdown by checking the
+bus->shutdown flag.
+
+Fixes: caa8422d01e9 ("ALSA: hda: Flush interrupts on disabling")
+Cc: Chris Wilson <chris@chris-wilson.co.uk>
+Link: https://lore.kernel.org/r/s5h1ruxt9cz.wl-tiwai@suse.de
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ sound/pci/hda/hda_bind.c  | 4 ++++
+ sound/pci/hda/hda_intel.c | 3 +++
+ 2 files changed, 7 insertions(+)
+
+diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c
+index 7ea201c05e5da..d0d6dfbfcfdf8 100644
+--- a/sound/pci/hda/hda_bind.c
++++ b/sound/pci/hda/hda_bind.c
+@@ -42,6 +42,10 @@ static void hda_codec_unsol_event(struct hdac_device *dev, unsigned int ev)
+ {
+       struct hda_codec *codec = container_of(dev, struct hda_codec, core);
+ 
++      /* ignore unsol events during shutdown */
++      if (codec->bus->shutdown)
++              return;
++
+       if (codec->patch_ops.unsol_event)
+               codec->patch_ops.unsol_event(codec, ev);
+ }
+diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
+index ef8955abd9186..3e3277100f08a 100644
+--- a/sound/pci/hda/hda_intel.c
++++ b/sound/pci/hda/hda_intel.c
+@@ -1310,8 +1310,11 @@ static int azx_free(struct azx *chip)
+ static int azx_dev_disconnect(struct snd_device *device)
+ {
+       struct azx *chip = device->device_data;
++      struct hdac_bus *bus = azx_bus(chip);
+ 
+       chip->bus.shutdown = 1;
++      cancel_work_sync(&bus->unsol_work);
++
+       return 0;
+ }
+ 
+-- 
+2.20.1
+

diff --git a/queue-4.4/series b/queue-4.4/series
index e289ac003815783f410ea904665d6427a963d870..7795fb8a84a11b32c20e284777f816b472be8874 100644 (file)
--- a/queue-4.4/series
+++ b/queue-4.4/series
@@ -68,3 +68,4 @@ crypto-user-fix-memory-leak-in-crypto_report.patch
 spi-atmel-fix-cs-high-support.patch
 rdma-qib-validate-show-store-callbacks-before-calling-them.patch
 thermal-fix-deadlock-in-thermal-thermal_zone_device_check.patch
+alsa-hda-fix-pending-unsol-events-at-shutdown.patch