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authorImre Deak <imre.deak@intel.com>2021-08-16 20:42:59 +0300
committerTakashi Iwai <tiwai@suse.de>2021-08-17 07:14:30 +0200
commit0165c4e19f6ec76b535de090e4bd145c73810c51 (patch)
treeb6d81f7c4798229e3ff2f87802e00bb49f6bed9d /sound/pci
parentda94692001ea45ffa1f5e9f17ecdef7aecd90c27 (diff)
downloadlinux-0165c4e19f6ec76b535de090e4bd145c73810c51.tar.bz2
ALSA: hda: Fix hang during shutdown due to link reset
During system shutdown codecs may be still active, and resetting the controller->codec HW link in this state - based on the bug reporter's tests - leads to the shutdown sequence to get stuck. This happens at least on the reporter's KBL system with an ALC662 codec. For now fix the issue by skipping the link reset step. Fixes: 472e18f63c42 ("ALSA: hda: Release controller display power during shutdown/reboot") References: https://bugzilla.kernel.org/show_bug.cgi?id=214045 References: https://gitlab.freedesktop.org/drm/intel/-/issues/3618#note_1024665 Reported-and-tested-by: youling257@gmail.com Cc: youling257@gmail.com Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://lore.kernel.org/r/20210816174259.2759103-1-imre.deak@intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/hda/hda_intel.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 0322b289505e..0062c18b646a 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -883,10 +883,11 @@ static unsigned int azx_get_pos_skl(struct azx *chip, struct azx_dev *azx_dev)
return azx_get_pos_posbuf(chip, azx_dev);
}
-static void azx_shutdown_chip(struct azx *chip)
+static void __azx_shutdown_chip(struct azx *chip, bool skip_link_reset)
{
azx_stop_chip(chip);
- azx_enter_link_reset(chip);
+ if (!skip_link_reset)
+ azx_enter_link_reset(chip);
azx_clear_irq_pending(chip);
display_power(chip, false);
}
@@ -895,6 +896,11 @@ static void azx_shutdown_chip(struct azx *chip)
static DEFINE_MUTEX(card_list_lock);
static LIST_HEAD(card_list);
+static void azx_shutdown_chip(struct azx *chip)
+{
+ __azx_shutdown_chip(chip, false);
+}
+
static void azx_add_card_list(struct azx *chip)
{
struct hda_intel *hda = container_of(chip, struct hda_intel, chip);
@@ -2385,7 +2391,7 @@ static void azx_shutdown(struct pci_dev *pci)
return;
chip = card->private_data;
if (chip && chip->running)
- azx_shutdown_chip(chip);
+ __azx_shutdown_chip(chip, true);
}
/* PCI IDs */