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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 <kirill.shutemov@linux.intel.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2023-03-15 14:31:27 +03:00 committed by Andrew Morton
parent 5f29298fba
commit 50c00d2c68
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/gem/i915_gem_internal.c
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@ -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;