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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>,
	"bvanassche@acm.org" <bvanassche@acm.org>
Cc: "beanhuo@micron.com" <beanhuo@micron.com>,
	"asutoshd@codeaurora.org" <asutoshd@codeaurora.org>,
	"cang@codeaurora.org" <cang@codeaurora.org>,
	"matthias.bgg@gmail.com" <matthias.bgg@gmail.com>,
	"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 v1] scsi: ufs-mediatek: Prevent LPM operation on undeclared VCC
Date: Mon, 27 Jul 2020 10:56:12 +0000
Message-ID: <SN6PR04MB4640BB7521A48396F6696157FC720@SN6PR04MB4640.namprd04.prod.outlook.com> (raw)
In-Reply-To: <20200724141627.20094-1-stanley.chu@mediatek.com>

 
> 
> In some platforms, VCC regulator may not be declared in device tree
> to keep itself "always-on". In this case, hba->vreg_info.vcc is NULL
> and shall not be operated during any flow.
> 
> Prevent possible NULL hba->vreg_info.vcc access in LPM mode by checking
> if it is valid first.
> 
> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>

  reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-24 14:16 Stanley Chu
2020-07-27 10:56 ` Avri Altman [this message]
2020-07-29  4:10 ` Martin K. Petersen

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