From: Avri Altman <Avri.Altman@wdc.com>
To: Stanley Chu <stanley.chu@mediatek.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
"alim.akhtar@samsung.com" <alim.akhtar@samsung.com>,
"jejb@linux.ibm.com" <jejb@linux.ibm.com>
Cc: "matthias.bgg@gmail.com" <matthias.bgg@gmail.com>,
"bvanassche@acm.org" <bvanassche@acm.org>,
"linux-mediatek@lists.infradead.org"
<linux-mediatek@lists.infradead.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kuohong.wang@mediatek.com" <kuohong.wang@mediatek.com>,
"peter.wang@mediatek.com" <peter.wang@mediatek.com>,
"chun-hung.wu@mediatek.com" <chun-hung.wu@mediatek.com>,
"andy.teng@mediatek.com" <andy.teng@mediatek.com>,
"chaotian.jing@mediatek.com" <chaotian.jing@mediatek.com>,
"cc.chou@mediatek.com" <cc.chou@mediatek.com>
Subject: RE: [PATCH 3/4] scsi: ufs-mediatek: Fix flag of unipro low-power mode
Date: Sat, 19 Sep 2020 08:08:33 +0000 [thread overview]
Message-ID: <BY5PR04MB67058DE7C6B5F63E960280CBFC3C0@BY5PR04MB6705.namprd04.prod.outlook.com> (raw)
In-Reply-To: <20200908064507.30774-4-stanley.chu@mediatek.com>
>
> Forcibly leave UniPro low-power mode if UIC commands is failed.
> This makes hba_enable_delay_us as correct (default) value for
> re-enabling the host.
>
> At the same time, change type of parameter "lpm" in function
> ufs_mtk_unipro_set_pm() to "bool".
Semantically, better leave it u32 as its eventually assigned to the arg3 of the uic command
>
> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
> ---
> drivers/scsi/ufs/ufs-mediatek.c | 20 ++++++++++++++------
> 1 file changed, 14 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
> index 887c03e8bcc0..feba74a72309 100644
> --- a/drivers/scsi/ufs/ufs-mediatek.c
> +++ b/drivers/scsi/ufs/ufs-mediatek.c
> @@ -419,7 +419,7 @@ static int ufs_mtk_pwr_change_notify(struct ufs_hba
> *hba,
> return ret;
> }
>
> -static int ufs_mtk_unipro_set_pm(struct ufs_hba *hba, u32 lpm)
> +static int ufs_mtk_unipro_set_pm(struct ufs_hba *hba, bool lpm)
> {
> int ret;
> struct ufs_mtk_host *host = ufshcd_get_variant(hba);
> @@ -427,8 +427,14 @@ static int ufs_mtk_unipro_set_pm(struct ufs_hba
> *hba, u32 lpm)
> ret = ufshcd_dme_set(hba,
> UIC_ARG_MIB_SEL(VS_UNIPROPOWERDOWNCONTROL, 0),
> lpm);
> - if (!ret)
> + if (!ret || !lpm) {
> + /*
> + * Forcibly set as non-LPM mode if UIC commands is failed
> + * to use default hba_enable_delay_us value for re-enabling
> + * the host.
> + */
> host->unipro_lpm = lpm;
Maybe just host->unipro_lpm = false; instead
next prev parent reply other threads:[~2020-09-19 8:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-08 6:45 [PATCH 0/4] scsi: ufs-mediatek: Fixes for kernel v5.10 Stanley Chu
2020-09-08 6:45 ` [PATCH 1/4] scsi: ufs-mediatek: Eliminate error message for unbound mphy Stanley Chu
2020-09-19 7:31 ` Avri Altman
2020-09-08 6:45 ` [PATCH 2/4] scsi: ufs-mediatek: Fix HOST_PA_TACTIVATE quirk Stanley Chu
2020-09-19 7:53 ` Avri Altman
2020-09-08 6:45 ` [PATCH 3/4] scsi: ufs-mediatek: Fix flag of unipro low-power mode Stanley Chu
2020-09-19 8:08 ` Avri Altman [this message]
2020-10-27 9:52 ` Stanley Chu
2020-09-08 6:45 ` [PATCH 4/4] scsi: ufs-mediatek: Add host reset mechanism Stanley Chu
2020-09-29 11:54 ` Avri Altman
2020-09-09 2:50 ` [PATCH 0/4] scsi: ufs-mediatek: Fixes for kernel v5.10 Martin K. Petersen
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