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| author | David Henningsson <david.henningsson@canonical.com> | 2015-09-03 11:51:35 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-09-03 12:14:45 +0200 |
| commit | d5f362a7b977bdfaf8a955f3d604a29267bd5464 (patch) | |
| tree | cd170f8c4f665d140935a713292f11ddabbed321 | |
| parent | f0675d4a8ed9d3e863ff611561ee0944969a2784 (diff) | |
| download | op-kernel-dev-d5f362a7b977bdfaf8a955f3d604a29267bd5464.zip op-kernel-dev-d5f362a7b977bdfaf8a955f3d604a29267bd5464.tar.gz | |
drm/i915: Add locks around audio component bind/unbind
This will make sure that audio callbacks do not race with
component bind/unbind.
[Note: this is an update patch to commit [51e1d83cab99: drm/i915: Call
audio pin/ELD notify function] where I mistakenly applied the older
version. Jani and Daniel's review tags were to the latest version,
so I add them below, too -- tiwai]
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_audio.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index 2d52d96..678a34f 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -543,9 +543,11 @@ static int i915_audio_component_bind(struct device *i915_dev, if (WARN_ON(acomp->ops || acomp->dev)) return -EEXIST; + drm_modeset_lock_all(dev_priv->dev); acomp->ops = &i915_audio_component_ops; acomp->dev = i915_dev; dev_priv->audio_component = acomp; + drm_modeset_unlock_all(dev_priv->dev); return 0; } @@ -556,9 +558,11 @@ static void i915_audio_component_unbind(struct device *i915_dev, struct i915_audio_component *acomp = data; struct drm_i915_private *dev_priv = dev_to_i915(i915_dev); + drm_modeset_lock_all(dev_priv->dev); acomp->ops = NULL; acomp->dev = NULL; dev_priv->audio_component = NULL; + drm_modeset_unlock_all(dev_priv->dev); } static const struct component_ops i915_audio_component_bind_ops = { |
