From: Lucas Stach l.stach@pengutronix.de
commit be132e1375c1fffe48801296279079f8a59a9ed3 upstream.
When something goes wrong in the GPU init after the cmdbuf suballocator has been constructed, we fail to destroy it properly. This causes havok later when the GPU is unbound due to a module unload or similar.
Fixes: e66774dd6f6a (drm/etnaviv: add cmdbuf suballocator) Signed-off-by: Lucas Stach l.stach@pengutronix.de Tested-by: Russell King rmk+kernel@armlinux.org.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -762,7 +762,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu if (IS_ERR(gpu->cmdbuf_suballoc)) { dev_err(gpu->dev, "Failed to create cmdbuf suballocator\n"); ret = PTR_ERR(gpu->cmdbuf_suballoc); - goto fail; + goto destroy_iommu; }
/* Create buffer: */ @@ -770,7 +770,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu PAGE_SIZE); if (ret) { dev_err(gpu->dev, "could not create command buffer\n"); - goto destroy_iommu; + goto destroy_suballoc; }
if (gpu->mmu->version == ETNAVIV_IOMMU_V1 && @@ -802,6 +802,9 @@ int etnaviv_gpu_init(struct etnaviv_gpu free_buffer: etnaviv_cmdbuf_free(&gpu->buffer); gpu->buffer.suballoc = NULL; +destroy_suballoc: + etnaviv_cmdbuf_suballoc_destroy(gpu->cmdbuf_suballoc); + gpu->cmdbuf_suballoc = NULL; destroy_iommu: etnaviv_iommu_destroy(gpu->mmu); gpu->mmu = NULL;