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SubjectRe: [PATCH v1 8/9] scsi: ufs: enable runtime pm only after ufshcd init
On 2018-07-06 05:30, Asutosh Das wrote:
> From: Gilad Broner <gbroner@codeaurora.org>
>
> Previous code enables runtime pm before ufshcd_init() is completed,
> and before the hba struct is stored in the platform device private
> data. This means that pm runtime calls will have null hba pointer
> as well as partially initialized driver.
> Instead, enable pm runtime only after ufshcd_init() is done and
> after hba struct is stored in the platform device private data.
>
> Signed-off-by: Gilad Broner <gbroner@codeaurora.org>
> Signed-off-by: Can Guo <cang@codeaurora.org>
> Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
> ---
> drivers/scsi/ufs/ufshcd-pltfrm.c | 11 ++++-------
> 1 file changed, 4 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c
> b/drivers/scsi/ufs/ufshcd-pltfrm.c
> index 7dba799..8332d99 100644
> --- a/drivers/scsi/ufs/ufshcd-pltfrm.c
> +++ b/drivers/scsi/ufs/ufshcd-pltfrm.c
> @@ -354,24 +354,21 @@ int ufshcd_pltfrm_init(struct platform_device
> *pdev,
> }
>
> ufshcd_parse_pm_levels(hba);
> - pm_runtime_set_active(&pdev->dev);
> - pm_runtime_enable(&pdev->dev);
>
> ufshcd_init_lanes_per_dir(hba);
>
> err = ufshcd_init(hba, mmio_base, irq);
> if (err) {
> dev_err(dev, "Initialization failed\n");
> - goto out_disable_rpm;
> + goto dealloc_host;
> }
>
> platform_set_drvdata(pdev, hba);
>
> - return 0;
> + pm_runtime_set_active(&pdev->dev);
> + pm_runtime_enable(&pdev->dev);
>
> -out_disable_rpm:
> - pm_runtime_disable(&pdev->dev);
> - pm_runtime_set_suspended(&pdev->dev);
> + return 0;
> dealloc_host:
> ufshcd_dealloc_host(hba);
> out:

Looks good to me.
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>

--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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