Dear Arunpravin,
Am 21.03.22 um 06:59 schrieb Arunpravin Paneer Selvam:
add a simple check to reject any size not aligned to the
min_page_size.
Nit: I’d start sentences with a capital letter.
Could you please add a summary of the discussion to the commit message,
so the question “Why?” is answered?
Kind regards,
Paul
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@xxxxxxx>
---
drivers/gpu/drm/drm_buddy.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c
index 72f52f293249..b503c88786b0 100644
--- a/drivers/gpu/drm/drm_buddy.c
+++ b/drivers/gpu/drm/drm_buddy.c
@@ -661,6 +661,9 @@ int drm_buddy_alloc_blocks(struct drm_buddy *mm,
if (range_overflows(start, size, mm->size))
return -EINVAL;
+ if (WARN_ON(!IS_ALIGNED(size, min_page_size)))
+ return -EINVAL;
+
/* Actual range allocation */
if (start + size == end)
return __drm_buddy_alloc_range(mm, start, size, blocks);
