[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20211227151333.763895602@linuxfoundation.org>
Date: Mon, 27 Dec 2021 16:30:43 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Harsha Priya <harshapriya.n@...el.com>,
Emmanuel Jillela <emmanuel.jillela@...el.com>,
Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
Takashi Iwai <tiwai@...e.de>,
Ville Syrjälä
<ville.syrjala@...ux.intel.com>
Subject: [PATCH 5.15 068/128] ALSA: hda/hdmi: Disable silent stream on GLK
From: Ville Syrjälä <ville.syrjala@...ux.intel.com>
commit b6fd77472dea76b7a2bad3a338ade920152972b8 upstream.
The silent stream stuff recurses back into i915 audio
component .get_power() from the .pin_eld_notify() hook.
On GLK this will deadlock as i915 may already be holding
the relevant modeset locks during .pin_eld_notify() and
the GLK audio vs. CDCLK workaround will try to grab the
same locks from .get_power().
Until someone comes up with a better fix just disable the
silent stream support on GLK.
Cc: stable@...r.kernel.org
Cc: Harsha Priya <harshapriya.n@...el.com>
Cc: Emmanuel Jillela <emmanuel.jillela@...el.com>
Cc: Kai Vehmanen <kai.vehmanen@...ux.intel.com>
Cc: Takashi Iwai <tiwai@...e.de>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2623
Fixes: 951894cf30f4 ("ALSA: hda/hdmi: Add Intel silent stream support")
Signed-off-by: Ville Syrjälä <ville.syrjala@...ux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@...ux.intel.com>
Link: https://lore.kernel.org/r/20211222145350.24342-1-ville.syrjala@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
sound/pci/hda/patch_hdmi.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -2947,7 +2947,8 @@ static int parse_intel_hdmi(struct hda_c
/* Intel Haswell and onwards; audio component with eld notifier */
static int intel_hsw_common_init(struct hda_codec *codec, hda_nid_t vendor_nid,
- const int *port_map, int port_num, int dev_num)
+ const int *port_map, int port_num, int dev_num,
+ bool send_silent_stream)
{
struct hdmi_spec *spec;
int err;
@@ -2980,7 +2981,7 @@ static int intel_hsw_common_init(struct
* Enable silent stream feature, if it is enabled via
* module param or Kconfig option
*/
- if (enable_silent_stream)
+ if (send_silent_stream)
spec->send_silent_stream = true;
return parse_intel_hdmi(codec);
@@ -2988,12 +2989,18 @@ static int intel_hsw_common_init(struct
static int patch_i915_hsw_hdmi(struct hda_codec *codec)
{
- return intel_hsw_common_init(codec, 0x08, NULL, 0, 3);
+ return intel_hsw_common_init(codec, 0x08, NULL, 0, 3,
+ enable_silent_stream);
}
static int patch_i915_glk_hdmi(struct hda_codec *codec)
{
- return intel_hsw_common_init(codec, 0x0b, NULL, 0, 3);
+ /*
+ * Silent stream calls audio component .get_power() from
+ * .pin_eld_notify(). On GLK this will deadlock in i915 due
+ * to the audio vs. CDCLK workaround.
+ */
+ return intel_hsw_common_init(codec, 0x0b, NULL, 0, 3, false);
}
static int patch_i915_icl_hdmi(struct hda_codec *codec)
@@ -3004,7 +3011,8 @@ static int patch_i915_icl_hdmi(struct hd
*/
static const int map[] = {0x0, 0x4, 0x6, 0x8, 0xa, 0xb};
- return intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 3);
+ return intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 3,
+ enable_silent_stream);
}
static int patch_i915_tgl_hdmi(struct hda_codec *codec)
@@ -3016,7 +3024,8 @@ static int patch_i915_tgl_hdmi(struct hd
static const int map[] = {0x4, 0x6, 0x8, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
int ret;
- ret = intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 4);
+ ret = intel_hsw_common_init(codec, 0x02, map, ARRAY_SIZE(map), 4,
+ enable_silent_stream);
if (!ret) {
struct hdmi_spec *spec = codec->spec;
Powered by blists - more mailing lists