From d58560e6fa4611cee0630ef6e12544269563ca75 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 9 Nov 2020 11:57:24 +0100 Subject: pwm: lpss: Log error from pwm_lpss_is_updating() if the update bit is still set pwm_lpss_is_updating() does a sanity check which should never fail. If the check does actually fail that is worth logging an error, especially since this means that we will skip making the requested changes to the PWM settings. Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede Signed-off-by: Thierry Reding --- drivers/pwm/pwm-lpss.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/pwm') diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c index 3444c56b4bed..939de93c157b 100644 --- a/drivers/pwm/pwm-lpss.c +++ b/drivers/pwm/pwm-lpss.c @@ -76,7 +76,12 @@ static int pwm_lpss_wait_for_update(struct pwm_device *pwm) static inline int pwm_lpss_is_updating(struct pwm_device *pwm) { - return (pwm_lpss_read(pwm) & PWM_SW_UPDATE) ? -EBUSY : 0; + if (pwm_lpss_read(pwm) & PWM_SW_UPDATE) { + dev_err(pwm->chip->dev, "PWM_SW_UPDATE is still set, skipping update\n"); + return -EBUSY; + } + + return 0; } static void pwm_lpss_prepare(struct pwm_lpss_chip *lpwm, struct pwm_device *pwm, -- cgit v1.2.3