linux-kernel - Re: [PATCH 08/13] scsi: ufs: qcom: Check the return value of ufs_qcom_power_up

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Date:   Thu, 7 Dec 2023 13:57:44 +0530
From:   Nitin Rawat <quic_nitirawa@...cinc.com>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        <martin.petersen@...cle.com>, <jejb@...ux.ibm.com>
CC:     <andersson@...nel.org>, <konrad.dybcio@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_cang@...cinc.com>
Subject: Re: [PATCH 08/13] scsi: ufs: qcom: Check the return value of
 ufs_qcom_power_up_sequence()



On 12/1/2023 8:44 PM, Manivannan Sadhasivam wrote:
> If ufs_qcom_power_up_sequence() fails, then it makes no sense to enable
> the lane clocks and continue ufshcd_hba_enable(). So let's check the return
> value of ufs_qcom_power_up_sequence().
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>   drivers/ufs/host/ufs-qcom.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
> index 4948dd732aae..e4dd3777a4d4 100644
> --- a/drivers/ufs/host/ufs-qcom.c
> +++ b/drivers/ufs/host/ufs-qcom.c
> @@ -415,7 +415,10 @@ static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba,
>   
>   	switch (status) {
>   	case PRE_CHANGE:
> -		ufs_qcom_power_up_sequence(hba);
> +		err = ufs_qcom_power_up_sequence(hba);
> +		if (err)
> +			return err;
> +
>   		/*
>   		 * The PHY PLL output is the source of tx/rx lane symbol
>   		 * clocks, hence, enable the lane clocks only after PHY


Reviewed-by: Nitin Rawat <quic_nitirawa@...cinc.com>