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pwm: crc: Propagate errors in .get_state() to the caller

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.get_state() can return an error indication. Make use of it to propagate
failing hardware accesses.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221130152148.2769768-6-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Uwe Kleine-König 2022-12-02 19:35:30 +01:00 committed by Thierry Reding
parent fea768cf68
commit 9c9d5e9957
1 changed files with 2 additions and 2 deletions
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4
drivers/pwm/pwm-crc.c
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@ -132,13 +132,13 @@ static int crc_pwm_get_state(struct pwm_chip *chip, struct pwm_device *pwm,
error = regmap_read(crc_pwm->regmap, PWM0_CLK_DIV, &clk_div_reg);
if (error) {
dev_err(dev, "Error reading PWM0_CLK_DIV %d\n", error);
return 0;
return error;
}
error = regmap_read(crc_pwm->regmap, PWM0_DUTY_CYCLE, &duty_cycle_reg);
if (error) {
dev_err(dev, "Error reading PWM0_DUTY_CYCLE %d\n", error);
return 0;
return error;
}
clk_div = (clk_div_reg & ~PWM_OUTPUT_ENABLE) + 1;