Messages in this thread | | | Date | Tue, 15 Sep 2020 02:54:01 +0000 | From | Bjorn Andersson <> | Subject | Re: [PATCH v1 1/1] scsi: ufshcd: Properly set the device Icc Level |
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On Tue 01 Sep 01:19 UTC 2020, Bao D. Nguyen wrote:
> UFS version 3.0 and later devices require Vcc and Vccq power supplies > with Vccq2 being optional. While earlier UFS version 2.0 and 2.1 > devices, the Vcc and Vccq2 are required with Vccq being optional. > Check the required power supplies used by the device > and set the device's supported Icc level properly. > > Signed-off-by: Can Guo <cang@codeaurora.org> > Signed-off-by: Asutosh Das <asutoshd@codeaurora.org> > Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org> > --- > drivers/scsi/ufs/ufshcd.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > index 06e2439..fdd1d3e 100644 > --- a/drivers/scsi/ufs/ufshcd.c > +++ b/drivers/scsi/ufs/ufshcd.c > @@ -6845,8 +6845,9 @@ static u32 ufshcd_find_max_sup_active_icc_level(struct ufs_hba *hba, > { > u32 icc_level = 0; > > - if (!hba->vreg_info.vcc || !hba->vreg_info.vccq || > - !hba->vreg_info.vccq2) { > + if (!hba->vreg_info.vcc ||
How did you test this?
devm_regulator_get() never returns NULL, so afaict this conditional will never be taken with either the old or new version of the code.
Regards, Bjorn
> + (!hba->vreg_info.vccq && hba->dev_info.wspecversion >= 0x300) || > + (!hba->vreg_info.vccq2 && hba->dev_info.wspecversion < 0x300)) { > dev_err(hba->dev, > "%s: Regulator capability was not set, actvIccLevel=%d", > __func__, icc_level); > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
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