From 50c00d2c686e52c0dd9b5bddc6727f6c442cbcc0 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 15 Mar 2023 14:31:27 +0300 Subject: [PATCH] drm/i915: fix MAX_ORDER usage in i915_gem_object_get_pages_internal() MAX_ORDER is not inclusive: the maximum allocation order buddy allocator can deliver is MAX_ORDER-1. Fix MAX_ORDER usage in i915_gem_object_get_pages_internal(). Link: https://lkml.kernel.org/r/20230315113133.11326-5-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov Acked-by: Tvrtko Ursulin Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Signed-off-by: Andrew Morton --- drivers/gpu/drm/i915/gem/i915_gem_internal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_internal.c b/drivers/gpu/drm/i915/gem/i915_gem_internal.c index 6bc26b4b06b8..eae9e9f6d3bf 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_internal.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_internal.c @@ -36,7 +36,7 @@ static int i915_gem_object_get_pages_internal(struct drm_i915_gem_object *obj) struct sg_table *st; struct scatterlist *sg; unsigned int npages; /* restricted by sg_alloc_table */ - int max_order = MAX_ORDER; + int max_order = MAX_ORDER - 1; unsigned int max_segment; gfp_t gfp;