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drm/etnaviv: fix memory leak in IOMMU init path

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Plug in error handling to free any allocated ressources in the
IOMMU init path.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Lucas Stach 2016-01-25 12:41:05 +01:00
parent 602eb48966
commit 45d16a6d94
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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@ -596,10 +596,9 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
goto fail;
}
/* TODO: we will leak here memory - fix it! */
gpu->mmu = etnaviv_iommu_new(gpu, iommu, version);
if (!gpu->mmu) {
iommu_domain_free(iommu);
ret = -ENOMEM;
goto fail;
}
@ -609,7 +608,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
if (!gpu->buffer) {
ret = -ENOMEM;
dev_err(gpu->dev, "could not create command buffer\n");
goto fail;
goto destroy_iommu;
}
if (gpu->buffer->paddr - gpu->memory_base > 0x80000000) {
ret = -EINVAL;
@ -639,6 +638,9 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
free_buffer:
etnaviv_gpu_cmdbuf_free(gpu->buffer);
gpu->buffer = NULL;
destroy_iommu:
etnaviv_iommu_destroy(gpu->mmu);
gpu->mmu = NULL;
fail:
pm_runtime_mark_last_busy(gpu->dev);
pm_runtime_put_autosuspend(gpu->dev);