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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2020-03-16 11:32:15 +0100 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2020-03-30 18:03:05 +0200 |
| commit | d5a3c7a4536e1329a758e14340efd0e65252bd3d (patch) | |
| tree | c3e6849751b15336e410bb3534cffef22fc14c50 /drivers/pwm | |
| parent | 1451a3eed24b5fd6a604683f0b6995e0e7e16c79 (diff) | |
| download | linux-stable-d5a3c7a4536e1329a758e14340efd0e65252bd3d.tar.gz linux-stable-d5a3c7a4536e1329a758e14340efd0e65252bd3d.tar.bz2 linux-stable-d5a3c7a4536e1329a758e14340efd0e65252bd3d.zip | |
pwm: renesas-tpu: Fix late Runtime PM enablement
Runtime PM should be enabled before calling pwmchip_add(), as PWM users
can appear immediately after the PWM chip has been added.
Likewise, Runtime PM should always be disabled after the removal of the
PWM chip, even if the latter failed.
Fixes: 99b82abb0a35b073 ("pwm: Add Renesas TPU PWM driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-renesas-tpu.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/pwm/pwm-renesas-tpu.c b/drivers/pwm/pwm-renesas-tpu.c index 4a855a21b782..8032acc84161 100644 --- a/drivers/pwm/pwm-renesas-tpu.c +++ b/drivers/pwm/pwm-renesas-tpu.c @@ -415,16 +415,17 @@ static int tpu_probe(struct platform_device *pdev) tpu->chip.base = -1; tpu->chip.npwm = TPU_CHANNEL_MAX; + pm_runtime_enable(&pdev->dev); + ret = pwmchip_add(&tpu->chip); if (ret < 0) { dev_err(&pdev->dev, "failed to register PWM chip\n"); + pm_runtime_disable(&pdev->dev); return ret; } dev_info(&pdev->dev, "TPU PWM %d registered\n", tpu->pdev->id); - pm_runtime_enable(&pdev->dev); - return 0; } @@ -434,12 +435,10 @@ static int tpu_remove(struct platform_device *pdev) int ret; ret = pwmchip_remove(&tpu->chip); - if (ret) - return ret; pm_runtime_disable(&pdev->dev); - return 0; + return ret; } #ifdef CONFIG_OF |