drm/xe: Fix conversion from clock ticks to milliseconds

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[ Upstream commit 7276878b06 ]

When tick counts are large and multiplication by MSEC_PER_SEC is larger
than 64 bits, the conversion from clock ticks to milliseconds can go bad.

Use mul_u64_u32_div() instead.

Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Suggested-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Fixes: 49cc215aad ("drm/xe: Add xe_gt_clock_interval_to_ms helper")
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/1562f1b62d5be3fbaee100f09107f3cc49e40dd1.1763408584.git.harish.chegondi@intel.com
(cherry picked from commit 96b93ac214)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Harish Chegondi 2025-11-17 11:48:43 -08:00 • committed by Greg Kroah-Hartman

parent c20df1e31b

commit 15f4066889

1 changed files with 1 additions and 6 deletions

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drivers/gpu/drm/xe/xe_gt_clock.c

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