in vc4_vec_encoder_enable, the call to pm_runtime_get_sync increments the counter even in case of failure, leading to incorrect ref count. In case of failure, decrement the ref count before returning.
Signed-off-by: Navid Emamdoost navid.emamdoost@gmail.com --- drivers/gpu/drm/vc4/vc4_vec.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c index bd5b8eb58b18..706fdc7758f9 100644 --- a/drivers/gpu/drm/vc4/vc4_vec.c +++ b/drivers/gpu/drm/vc4/vc4_vec.c @@ -406,7 +406,7 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder) ret = pm_runtime_get_sync(&vec->pdev->dev); if (ret < 0) { DRM_ERROR("Failed to retain power domain: %d\n", ret); - return; + goto out; }
/* @@ -419,13 +419,13 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder) ret = clk_set_rate(vec->clock, 108000000); if (ret) { DRM_ERROR("Failed to set clock rate: %d\n", ret); - return; + goto out; }
ret = clk_prepare_enable(vec->clock); if (ret) { DRM_ERROR("Failed to turn on core clock: %d\n", ret); - return; + goto out; }
/* Reset the different blocks */ @@ -464,6 +464,8 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder) VEC_WRITE(VEC_DAC_MISC, VEC_DAC_MISC_VID_ACT | VEC_DAC_MISC_DAC_RST_N); VEC_WRITE(VEC_CFG, VEC_CFG_VEC_EN); +out: + pm_runtime_put(&vec->pdev->dev); }