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drm/i915/query: Use struct_size() helper

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Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200617220331.GA19550@embeddedor
This commit is contained in:
Gustavo A. R. Silva
2020-06-17 17:03:31 -05:00
committed by Chris Wilson
parent 810b7ee300
commit bf3c508375
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/i915/i915_query.c
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@@ -113,8 +113,7 @@ query_engine_info(struct drm_i915_private *i915,
for_each_uabi_engine(engine, i915)
num_uabi_engines++;
len = sizeof(struct drm_i915_query_engine_info) +
num_uabi_engines * sizeof(struct drm_i915_engine_info);
len = struct_size(query_ptr, engines, num_uabi_engines);
ret = copy_query_item(&query, sizeof(query), len, query_item);
if (ret != 0)