From: Sean Paul <seanpaul@xxxxxxxxxxxx> of_find_device_by_node() grabs a dev reference, so make sure we clear it on error and remove. Changes in v2: - Added to the set (Jordan) Cc: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx> Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx> --- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index f7240c9e11fb..e2b839b5d3bd 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -1253,6 +1253,9 @@ void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu) free_irq(gmu->gmu_irq, gmu); free_irq(gmu->hfi_irq, gmu); + /* Drop reference taken in of_find_device_by_node */ + put_device(gmu->dev); + gmu->initialized = false; } @@ -1277,12 +1280,12 @@ int a6xx_gmu_probe(struct a6xx_gpu *a6xx_gpu, struct device_node *node) /* Get the list of clocks */ ret = a6xx_gmu_clocks_probe(gmu); if (ret) - return ret; + goto err_put_device; /* Set up the IOMMU context bank */ ret = a6xx_gmu_memory_probe(gmu); if (ret) - return ret; + goto err_put_device; /* Allocate memory for for the HFI queues */ gmu->hfi = a6xx_gmu_memory_alloc(gmu, SZ_16K); @@ -1334,6 +1337,11 @@ int a6xx_gmu_probe(struct a6xx_gpu *a6xx_gpu, struct device_node *node) iommu_domain_free(gmu->domain); } + ret = -ENODEV; - return -ENODEV; +err_put_device: + /* Drop reference taken in of_find_device_by_node */ + put_device(gmu->dev); + + return ret; } -- Sean Paul, Software Engineer, Google / Chromium OS
