Re: [PATCH v2] panfrost: Properly undo pm_runtime_enable when deferring a probe

[Robin Murphy <robin.murphy@arm.com>]

On 2019-10-23 1:21 pm, Tomeu Vizoso wrote:
> When deferring the probe because of a missing regulator, we were calling
> pm_runtime_disable even if pm_runtime_enable wasn't called.
> 
> Move the call to pm_runtime_disable to the right place.
> 
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
> Reported-by: Chen-Yu Tsai <wens@csie.org>
> Cc: Robin Murphy <robin.murphy@arm.com>
> Fixes: f4a3c6a44b35 ("drm/panfrost: Disable PM on probe failure")

I think that commit was right at the time, but actually we missed 
reordering the cleanup path to match the change in 635430797d3f. 
Otherwise, though,

Reviewed-by: Robin Murphy <robin.murphy@arm.com>

> ---
>   drivers/gpu/drm/panfrost/panfrost_drv.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
> index bc2ddeb55f5d..f21bc8a7ee3a 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_drv.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
> @@ -556,11 +556,11 @@ static int panfrost_probe(struct platform_device *pdev)
>   	return 0;
>   
>   err_out2:
> +	pm_runtime_disable(pfdev->dev);
>   	panfrost_devfreq_fini(pfdev);
>   err_out1:
>   	panfrost_device_fini(pfdev);
>   err_out0:
> -	pm_runtime_disable(pfdev->dev);
>   	drm_dev_put(ddev);
>   	return err;
>   }
>