diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-14 16:00:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-14 16:00:09 -0700 |
| commit | fded09198826b2998242ed2e1a16527849884d3f (patch) | |
| tree | 7d55124bab03790d50cc51461e8c4d1b8cec84e9 /drivers/clk | |
| parent | 87bd8c2b93ae899ecd90a5e0550cdae4260cc4ca (diff) | |
| parent | 6ced5ff0be8e94871ba846dfbddf69d21363f3d7 (diff) | |
Merge tag 'pwm/for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm updates from Thierry Reding:
"The majority of this batch is conversion of the PWM period and duty
cycle to 64-bit unsigned integers, which is required so that some
types of hardware can generate the full range of signals that they're
capable of.
The remainder is mostly minor fixes and cleanups"
* tag 'pwm/for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: bcm-iproc: handle clk_get_rate() return
pwm: Replace HTTP links with HTTPS ones
pwm: omap-dmtimer: Repair pwm_omap_dmtimer_chip's broken kerneldoc header
pwm: mediatek: Provide missing kerneldoc description for 'soc' arg
pwm: bcm-kona: Remove impossible comparison when validating duty cycle
pwm: bcm-iproc: Remove impossible comparison when validating duty cycle
pwm: iqs620a: Use lowercase hexadecimal literals for consistency
pwm: Convert period and duty cycle to u64
clk: pwm: Use 64-bit division function
backlight: pwm_bl: Use 64-bit division function
pwm: sun4i: Use nsecs_to_jiffies to avoid a division
pwm: sifive: Use 64-bit division macro
pwm: iqs620a: Use 64-bit division
pwm: imx27: Use 64-bit division macro
pwm: imx-tpm: Use 64-bit division macro
pwm: clps711x: Use 64-bit division macro
hwmon: pwm-fan: Use 64-bit division macro
drm/i915: Use 64-bit division macro
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/clk-pwm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/clk/clk-pwm.c b/drivers/clk/clk-pwm.c index 87fe0b0e01a3..86f2e2d3fc02 100644 --- a/drivers/clk/clk-pwm.c +++ b/drivers/clk/clk-pwm.c @@ -89,7 +89,12 @@ static int clk_pwm_probe(struct platform_device *pdev) } if (of_property_read_u32(node, "clock-frequency", &clk_pwm->fixed_rate)) - clk_pwm->fixed_rate = NSEC_PER_SEC / pargs.period; + clk_pwm->fixed_rate = div64_u64(NSEC_PER_SEC, pargs.period); + + if (!clk_pwm->fixed_rate) { + dev_err(&pdev->dev, "fixed_rate cannot be zero\n"); + return -EINVAL; + } if (pargs.period != NSEC_PER_SEC / clk_pwm->fixed_rate && pargs.period != DIV_ROUND_UP(NSEC_PER_SEC, clk_pwm->fixed_rate)) { |