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drm/etnaviv: add missing failure path to destroy suballoc

Browse source 
commit be132e1375 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: e66774dd6f (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>
This commit is contained in:
Lucas Stach 2019-06-27 16:42:00 +02:00 committed by Greg Kroah-Hartman
parent ec5d99e18d
commit d2d061351d
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
View file

@ -760,7 +760,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu *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: */
@ -768,7 +768,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu *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 &&
@ -800,6 +800,9 @@ int etnaviv_gpu_init(struct etnaviv_gpu *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;