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drm/i915: Fix a NULL vs IS_ERR() bug

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[ Upstream commit 3a89311387 ]

The mmap_offset_attach() function returns error pointers, it doesn't
return NULL.

Fixes: eaee1c0858 ("drm/i915: Add a function to mmap framebuffer obj")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZH7tHLRZ9oBjedjN@moroto
Stable-dep-of: 1ac5167b3a ("drm/i915/gem: Adjust vma offset for framebuffer mmap offset")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2023-06-06 11:23:56 +03:00 committed by Greg Kroah-Hartman
parent dc2ab133cf
commit b12866e177
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/gem/i915_gem_mman.c
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@ -1118,8 +1118,8 @@ int i915_gem_fb_mmap(struct drm_i915_gem_object *obj, struct vm_area_struct *vma
/* handle stolen and smem objects */
mmap_type = i915_ggtt_has_aperture(ggtt) ? I915_MMAP_TYPE_GTT : I915_MMAP_TYPE_WC;
mmo = mmap_offset_attach(obj, mmap_type, NULL);
if (!mmo)
return -ENODEV;
if (IS_ERR(mmo))
return PTR_ERR(mmo);
}
/*