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pwm: berlin: Fix wrong register in suspend/resume

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commit 3a4b9d027e4061766f618292df91760ea64a1fcc upstream.

The 'enable' register should be BERLIN_PWM_EN rather than
BERLIN_PWM_ENABLE, otherwise, the driver accesses wrong address, there
will be cpu exception then kernel panic during suspend/resume.

Fixes: bbf0722c1c ("pwm: berlin: Add suspend/resume support")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20250819114224.31825-1-jszhang@kernel.org
Cc: stable@vger.kernel.org
[ukleinek: backport to 5.10]
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jisheng Zhang 2025-08-19 19:42:24 +08:00 • committed by Greg Kroah-Hartman
commit da3cadb8b0
1 changed files with 2 additions and 2 deletions
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4
drivers/pwm/pwm-berlin.c
View file

@ -249,7 +249,7 @@ static int berlin_pwm_suspend(struct device *dev)
if (!channel)
continue;
channel->enable = berlin_pwm_readl(pwm, i, BERLIN_PWM_ENABLE);
channel->enable = berlin_pwm_readl(pwm, i, BERLIN_PWM_EN);
channel->ctrl = berlin_pwm_readl(pwm, i, BERLIN_PWM_CONTROL);
channel->duty = berlin_pwm_readl(pwm, i, BERLIN_PWM_DUTY);
channel->tcnt = berlin_pwm_readl(pwm, i, BERLIN_PWM_TCNT);
@ -280,7 +280,7 @@ static int berlin_pwm_resume(struct device *dev)
berlin_pwm_writel(pwm, i, channel->ctrl, BERLIN_PWM_CONTROL);
berlin_pwm_writel(pwm, i, channel->duty, BERLIN_PWM_DUTY);
berlin_pwm_writel(pwm, i, channel->tcnt, BERLIN_PWM_TCNT);
berlin_pwm_writel(pwm, i, channel->enable, BERLIN_PWM_ENABLE);
berlin_pwm_writel(pwm, i, channel->enable, BERLIN_PWM_EN);
}
return 0;