diff options
| author | Imre Deak <imre.deak@intel.com> | 2024-05-21 17:30:22 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-21 15:38:43 +0300 |
| commit | f287b1e34f1dd910723ca720300548c27a9a72d7 (patch) | |
| tree | 699681577ed2d14d33f0e4f0aad3f55d38b2abfb /drivers/gpu/drm/i915 | |
| parent | 7a9883be3b98673333eec65c4a21cc18e60292eb (diff) | |
| download | linux-f287b1e34f1dd910723ca720300548c27a9a72d7.tar.xz | |
drm/i915: Fix audio component initialization
commit 75800e2e4203ea83bbc9d4f63ad97ea582244a08 upstream.
After registering the audio component in i915_audio_component_init()
the audio driver may call i915_audio_component_get_power() via the
component ops. This could program AUD_FREQ_CNTRL with an uninitialized
value if the latter function is called before display.audio.freq_cntrl
gets initialized. The get_power() function also does a modeset which in
the above case happens too early before the initialization step and
triggers the
"Reject display access from task"
error message added by the Fixes: commit below.
Fix the above issue by registering the audio component only after the
initialization step.
Fixes: 87c1694533c9 ("drm/i915: save AUD_FREQ_CNTRL state at audio domain suspend")
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10291
Cc: stable@vger.kernel.org # v5.5+
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240521143022.3784539-1-imre.deak@intel.com
(cherry picked from commit fdd0b80172758ce284f19fa8a26d90c61e4371d2)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_audio.c | 32 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_audio.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_driver.c | 2 |
3 files changed, 24 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c index 8b8d1d806566..1cf1674897e9 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.c +++ b/drivers/gpu/drm/i915/display/intel_audio.c @@ -1251,17 +1251,6 @@ static const struct component_ops i915_audio_component_bind_ops = { static void i915_audio_component_init(struct drm_i915_private *i915) { u32 aud_freq, aud_freq_init; - int ret; - - ret = component_add_typed(i915->drm.dev, - &i915_audio_component_bind_ops, - I915_COMPONENT_AUDIO); - if (ret < 0) { - drm_err(&i915->drm, - "failed to add audio component (%d)\n", ret); - /* continue with reduced functionality */ - return; - } if (DISPLAY_VER(i915) >= 9) { aud_freq_init = intel_de_read(i915, AUD_FREQ_CNTRL); @@ -1284,6 +1273,21 @@ static void i915_audio_component_init(struct drm_i915_private *i915) /* init with current cdclk */ intel_audio_cdclk_change_post(i915); +} + +static void i915_audio_component_register(struct drm_i915_private *i915) +{ + int ret; + + ret = component_add_typed(i915->drm.dev, + &i915_audio_component_bind_ops, + I915_COMPONENT_AUDIO); + if (ret < 0) { + drm_err(&i915->drm, + "failed to add audio component (%d)\n", ret); + /* continue with reduced functionality */ + return; + } i915->display.audio.component_registered = true; } @@ -1316,6 +1320,12 @@ void intel_audio_init(struct drm_i915_private *i915) i915_audio_component_init(i915); } +void intel_audio_register(struct drm_i915_private *i915) +{ + if (!i915->display.audio.lpe.platdev) + i915_audio_component_register(i915); +} + /** * intel_audio_deinit() - deinitialize the audio driver * @i915: the i915 drm device private data diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h index 07d034a981e9..9779343a3710 100644 --- a/drivers/gpu/drm/i915/display/intel_audio.h +++ b/drivers/gpu/drm/i915/display/intel_audio.h @@ -28,6 +28,7 @@ void intel_audio_codec_get_config(struct intel_encoder *encoder, void intel_audio_cdclk_change_pre(struct drm_i915_private *dev_priv); void intel_audio_cdclk_change_post(struct drm_i915_private *dev_priv); void intel_audio_init(struct drm_i915_private *dev_priv); +void intel_audio_register(struct drm_i915_private *i915); void intel_audio_deinit(struct drm_i915_private *dev_priv); void intel_audio_sdp_split_update(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state); diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c index 8f144d4d3c39..26514f931af7 100644 --- a/drivers/gpu/drm/i915/display/intel_display_driver.c +++ b/drivers/gpu/drm/i915/display/intel_display_driver.c @@ -386,6 +386,8 @@ void intel_display_driver_register(struct drm_i915_private *i915) intel_audio_init(i915); + intel_audio_register(i915); + intel_display_debugfs_register(i915); /* |