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[PW_SID:1100485] [RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup#2012

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[PW_SID:1100485] [RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup#2012
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@linux-riscv-bot linux-riscv-bot commented May 25, 2026

PR for series 1100485 applied to workflow__riscv__fixes

Name: [RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1100485
Version: 1

@sysheap
pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup
9e10905 
The cycle register is always u32, so cycles_to_ns() can take a u32
instead of a u64. With that narrowing, cycles * NSEC_PER_SEC is at most
u32::MAX * 1e9 (~4.3e18), which fits in u64 without overflow. The
saturating arithmetic is therefore no longer needed, and the ceiling
division can use Rust's u64::div_ceil() directly instead of the
open-coded numerator/denominator form.

This also drops the TODO referring to a future
mul_u64_u64_div_u64_roundup kernel helper, which is no longer required.

Signed-off-by: Maurice Hieronymus <mhi@mailbox.org>
Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>
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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 115.35 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1018.50 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1369.80 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 19.38 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 20.98 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.57 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 77.00 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.23 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
kdoc
Desc: Detects for kdoc errors
Duration: 0.70 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
module-param
Desc: Detect module_param changes
Duration: 0.24 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.22 seconds
Result: PASS

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linux-riscv-bot commented May 25, 2026

Patch 1: "[RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.26 seconds
Result: PASS

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