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9870dc39dc
mmu_ops->unmap() will fail when called on a BO that has not been
previously mapped, and the error path in panfrost_ioctl_create_bo()
can call drm_gem_object_put_unlocked() (which in turn calls
panfrost_mmu_unmap()) on a BO that has not been mapped yet.
Keep track of the mapped/unmapped state to avoid such issues.
Fixes: f3ba91228e ("drm/panfrost: Add initial panfrost driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190618081343.16927-1-boris.brezillon@collabora.com
31 lines
785 B
C
31 lines
785 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
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#ifndef __PANFROST_GEM_H__
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#define __PANFROST_GEM_H__
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#include <drm/drm_gem_shmem_helper.h>
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#include <drm/drm_mm.h>
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struct panfrost_gem_object {
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struct drm_gem_shmem_object base;
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struct drm_mm_node node;
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bool is_mapped;
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};
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static inline
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struct panfrost_gem_object *to_panfrost_bo(struct drm_gem_object *obj)
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{
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return container_of(to_drm_gem_shmem_obj(obj), struct panfrost_gem_object, base);
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}
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struct drm_gem_object *panfrost_gem_create_object(struct drm_device *dev, size_t size);
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struct drm_gem_object *
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panfrost_gem_prime_import_sg_table(struct drm_device *dev,
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struct dma_buf_attachment *attach,
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struct sg_table *sgt);
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#endif /* __PANFROST_GEM_H__ */
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