From: Colin Ian King Date: Tue, 10 Dec 2019 14:32:05 +0000 (+0000) Subject: drm/i915/selftests: fix uninitialized variable sum when summing up values X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=1805ec67b12a12c794aee7ed46bd577748ee2a2c;p=kernel.git drm/i915/selftests: fix uninitialized variable sum when summing up values Currently the variable sum is not uninitialized and hence will cause an incorrect result in the summation values. Fix this by initializing sum to the first item in the summation. Addresses-Coverity: ("Uninitialized scalar variable") Fixes: 3c7a44bbbfa7 ("drm/i915/selftests: Perform some basic cycle counting of MI ops") Signed-off-by: Colin Ian King Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20191210143205.338308-1-colin.king@canonical.com --- diff --git a/drivers/gpu/drm/i915/gt/selftest_engine_cs.c b/drivers/gpu/drm/i915/gt/selftest_engine_cs.c index 761d81f4bd680..f88e445a1cae8 100644 --- a/drivers/gpu/drm/i915/gt/selftest_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/selftest_engine_cs.c @@ -108,7 +108,7 @@ static u32 trifilter(u32 *a) sort(a, COUNT, sizeof(*a), cmp_u32, NULL); - sum += mul_u32_u32(a[2], 2); + sum = mul_u32_u32(a[2], 2); sum += a[1]; sum += a[3];