Commit d5f362a7 authored by David Henningsson's avatar David Henningsson Committed by Takashi Iwai

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 [51e1d83c: 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: default avatarDavid Henningsson <david.henningsson@canonical.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Acked-by: default avatarDaniel Vetter <daniel@ffwll.ch>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent f0675d4a
......@@ -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 = {
......
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