From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stanley Chu Subject: [PATCH v2 1/3] scsi: ufs: Do not overwrite Auto-Hibernate timer Date: Wed, 15 May 2019 17:36:26 +0800 Message-ID: <1557912988-26758-2-git-send-email-stanley.chu@mediatek.com> References: <1557912988-26758-1-git-send-email-stanley.chu@mediatek.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1557912988-26758-1-git-send-email-stanley.chu@mediatek.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: linux-scsi@vger.kernel.org, martin.petersen@oracle.com, avri.altman@wdc.com, alim.akhtar@samsung.com, pedrom.sousa@synopsys.com Cc: marc.w.gonzalez@free.fr, andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, evgreen@chromium.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, Stanley Chu , linux-arm-kernel@lists.infradead.org, beanhuo@micron.com List-Id: linux-mediatek@lists.infradead.org Some vendor-specific initialization flow may set its own auto-hibernate timer. In this case, do not overwrite timer value as "default value" in ufshcd_init(). Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index e040f9dd9ff3..1665820c22fd 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8309,7 +8309,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) UIC_LINK_HIBERN8_STATE); /* Set the default auto-hiberate idle timer value to 150 ms */ - if (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) { + if (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT & !hba->ahit) { hba->ahit = FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 150) | FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3); } -- 2.18.0