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Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes

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Fix a kernel nullptr deref on module
unload when any etnaviv GPU failed to initialize properly.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1561974148.2321.1.camel@pengutronix.de
This commit is contained in:
Dave Airlie 2019-07-04 11:19:23 +10:00
commit b5252bdf09
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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@ -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;