Re: [PATCH] clk: qcom: gdsc: WARN when failing to toggle

[Jeffrey Hugo]

On 5/3/2019 6:17 PM, Bjorn Andersson wrote:
> Failing to toggle a GDSC as the driver core is attaching the
> power-domain to a device will cause a silent probe deferral. Provide an
> explicit warning to the developer, in order to reduce the amount of time
> it take to debug this.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>

Reviewed-by: Jeffrey Hugo <jhugo@xxxxxxxxxxxxxx>
Tested-by: Jeffrey Hugo <jhugo@xxxxxxxxxxxxxx>

> ---
>   drivers/clk/qcom/gdsc.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
> index dd63aa36b092..6a8a4996dde3 100644
> --- a/drivers/clk/qcom/gdsc.c
> +++ b/drivers/clk/qcom/gdsc.c
> @@ -149,7 +149,9 @@ static int gdsc_toggle_logic(struct gdsc *sc, enum gdsc_status status)
>   		udelay(1);
>   	}
>   
> -	return gdsc_poll_status(sc, status);
> +	ret = gdsc_poll_status(sc, status);
> +	WARN(ret, "%s status stuck at 'o%s'", sc->pd.name, status ? "ff" : "n");
> +	return ret;
>   }
>   
>   static inline int gdsc_deassert_reset(struct gdsc *sc)


--
Jeffrey Hugo
Qualcomm Datacenter Technologies as an affiliate of Qualcomm 
Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.