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drm/panthor: Don't check the array stride on empty uobj arrays

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The user is likely to leave all the drm_panthor_obj_array fields
to zero when the array is empty, which will cause an EINVAL failure.

v2:
- Added R-bs

Fixes: 4bdca11507 ("drm/panthor: Add the driver frontend block")
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240703071640.231278-2-boris.brezillon@collabora.com
This commit is contained in:
Boris Brezillon 2024-07-03 09:16:39 +02:00
parent 704c1bef3a
commit 1a9a71439c
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/panthor/panthor_drv.c
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@ -86,15 +86,15 @@ panthor_get_uobj_array(const struct drm_panthor_obj_array *in, u32 min_stride,
int ret = 0;
void *out_alloc;
if (!in->count)
return NULL;
/* User stride must be at least the minimum object size, otherwise it might
* lack useful information.
*/
if (in->stride < min_stride)
return ERR_PTR(-EINVAL);
if (!in->count)
return NULL;
out_alloc = kvmalloc_array(in->count, obj_size, GFP_KERNEL);
if (!out_alloc)
return ERR_PTR(-ENOMEM);