From: Maarten Lankhorst Date: Tue, 4 Apr 2017 13:22:48 +0000 (+0200) Subject: Revert "drm/i915: Lock mode_config.mutex in intel_display_resume." X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c50b4bf6e25a3ce2b058a132f49335ac9fa67062;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git Revert "drm/i915: Lock mode_config.mutex in intel_display_resume." This reverts commit ea49c9acf2db7082f0406bb3a570cc6bad37082b. mode_config.mutex was originally added to fix WARNs in connector functions, but now that atomic nonblocking modeset support is included, we will likely never hold any any lock at all. The WARN mentioned in commit bbf35e9defb9a6d1 ("drm/i915: Pass atomic state to intel_audio_codec_enable, v2."), so it's safe to revert this now. Signed-off-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1491312168-18147-1-git-send-email-maarten.lankhorst@linux.intel.com Reviewed-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index b6b40cd15644..48a546210d8b 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -15559,13 +15559,6 @@ void intel_display_resume(struct drm_device *dev) if (state) state->acquire_ctx = &ctx; - /* - * This is a cludge because with real atomic modeset mode_config.mutex - * won't be taken. Unfortunately some probed state like - * audio_codec_enable is still protected by mode_config.mutex, so lock - * it here for now. - */ - mutex_lock(&dev->mode_config.mutex); drm_modeset_acquire_init(&ctx, 0); while (1) { @@ -15581,7 +15574,6 @@ void intel_display_resume(struct drm_device *dev) drm_modeset_drop_locks(&ctx); drm_modeset_acquire_fini(&ctx); - mutex_unlock(&dev->mode_config.mutex); if (ret) DRM_ERROR("Restoring old state failed with %i\n", ret);