From: Stanley Chu <stanley.chu@mediatek.com>
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 <stanley.chu@mediatek.com>,
linux-arm-kernel@lists.infradead.org, beanhuo@micron.com
Subject: [PATCH v4 1/3] scsi: ufs: Do not overwrite Auto-Hibernate timer
Date: Mon, 20 May 2019 22:10:43 +0800 [thread overview]
Message-ID: <1558361445-30994-2-git-send-email-stanley.chu@mediatek.com> (raw)
In-Reply-To: <1558361445-30994-1-git-send-email-stanley.chu@mediatek.com>
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 <stanley.chu@mediatek.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
---
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 8c1c551f2b42..ba04d07df279 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8312,7 +8312,7 @@ 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
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next prev parent reply other threads:[~2019-05-20 14:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-20 14:10 [PATCH v4 0/3] scsi: ufs: Add error handling of Auto-Hibernate Stanley Chu
2019-05-20 14:10 ` Stanley Chu [this message]
2019-05-20 14:10 ` [PATCH v4 2/3] scsi: ufs: Introduce ufshcd_is_auto_hibern8_supported() Stanley Chu
2019-05-21 6:18 ` Avri Altman
2019-05-21 6:29 ` Stanley Chu
2019-05-20 14:10 ` [PATCH v4 3/3] scsi: ufs: Add error-handling of Auto-Hibernate Stanley Chu
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