C Cheng 3f0a747281 cpuidle: Avoid potential overflow in integer multiplication ... [ Upstream commit 88390dd788 ] In detail: In C language, when you perform a multiplication operation, if both operands are of int type, the multiplication operation is performed on the int type, and then the result is converted to the target type. This means that if the product of int type multiplication exceeds the range that int type can represent, an overflow will occur even if you store the result in a variable of int64_t type. For a multiplication of two int values, it is better to use mul_u32_u32() rather than s->exit_latency_ns = s->exit_latency * NSEC_PER_USEC to avoid potential overflow happenning. Signed-off-by: C Cheng <C.Cheng@mediatek.com> Signed-off-by: Bo Ye <bo.ye@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> [ rjw: New subject ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-04-13 13:07:29 +02:00
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governors	cpuidle: teo: Avoid unnecessary variable assignments	2023-08-23 18:25:04 +02:00
coupled.c
cpuidle-arm.c
cpuidle-at91.c
cpuidle-big_little.c
cpuidle-calxeda.c
cpuidle-clps711x.c
cpuidle-cps.c
cpuidle-exynos.c
cpuidle-haltpoll.c	cpuidle: haltpoll: Do not enable interrupts when entering idle	2024-01-25 15:35:15 -08:00
cpuidle-kirkwood.c
cpuidle-mvebu-v7.c
cpuidle-powernv.c
cpuidle-psci-domain.c	cpuidle: psci: Move enabling OSI mode after power domains creation	2023-08-08 16:07:01 +02:00
cpuidle-psci.c
cpuidle-psci.h
cpuidle-pseries.c	powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT	2023-08-24 22:33:17 +10:00
cpuidle-qcom-spm.c
cpuidle-riscv-sbi.c
cpuidle-tegra.c
cpuidle-ux500.c
cpuidle-zynq.c
cpuidle.c	cpuidle: Use local_clock_noinstr()	2023-06-05 21:11:09 +02:00
cpuidle.h
driver.c	cpuidle: Avoid potential overflow in integer multiplication	2024-04-13 13:07:29 +02:00
dt_idle_genpd.c	cpuidle: dt_idle_genpd: Add helper function to remove genpd topology	2023-08-08 16:06:20 +02:00
dt_idle_genpd.h	cpuidle: dt_idle_genpd: Add helper function to remove genpd topology	2023-08-08 16:06:20 +02:00
dt_idle_states.c
dt_idle_states.h
governor.c
Kconfig
Kconfig.arm
Kconfig.mips
Kconfig.powerpc
Kconfig.riscv
Makefile
poll_state.c	cpuidle: Use local_clock_noinstr()	2023-06-05 21:11:09 +02:00
sysfs.c