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Yuuoniymripard
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drm/vc4: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage
If the device is already in a runtime PM enabled state pm_runtime_get_sync() will return 1. Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync() fails, so use pm_runtime_resume_and_get() instead. this function will handle this. Fixes: 4078f57 ("drm/vc4: Add DSI driver") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20220420135008.2757-1-linmq006@gmail.com
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drivers/gpu/drm/vc4/vc4_dsi.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -846,7 +846,7 @@ static void vc4_dsi_encoder_enable(struct drm_encoder *encoder)
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unsigned long phy_clock;
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int ret;
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ret = pm_runtime_get_sync(dev);
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ret = pm_runtime_resume_and_get(dev);
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if (ret) {
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DRM_ERROR("Failed to runtime PM enable on DSI%d\n", dsi->variant->port);
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return;

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