[PATCH v15 14/19] scsi: ufs: hisi: Rework the code that disables auto-hibernation

[Bart Van Assche <bvanassche@acm.org>]

The host driver link startup callback is called indirectly by
ufshcd_probe_hba(). That function applies the auto-hibernation
settings by writing hba->ahit into the auto-hibernation control
register. Simplify the code for disabling auto-hibernation by
setting hba->ahit instead of writing into the auto-hibernation
control register. This patch is part of an effort to move all
auto-hibernation register changes into the UFSHCI driver core.

Reviewed-by: Bao D. Nguyen <quic_nguyenb@quicinc.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Can Guo <quic_cang@quicinc.com>
Cc: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/ufs/host/ufs-hisi.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/ufs/host/ufs-hisi.c b/drivers/ufs/host/ufs-hisi.c
index 0229ac0a8dbe..2e032eaf9e93 100644
--- a/drivers/ufs/host/ufs-hisi.c
+++ b/drivers/ufs/host/ufs-hisi.c
@@ -142,7 +142,6 @@ static int ufs_hisi_link_startup_pre_change(struct ufs_hba *hba)
 	struct ufs_hisi_host *host = ufshcd_get_variant(hba);
 	int err;
 	uint32_t value;
-	uint32_t reg;
 
 	/* Unipro VS_mphy_disable */
 	ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0xD0C1, 0x0), 0x1);
@@ -232,9 +231,7 @@ static int ufs_hisi_link_startup_pre_change(struct ufs_hba *hba)
 		ufshcd_writel(hba, UFS_HCLKDIV_NORMAL_VALUE, UFS_REG_HCLKDIV);
 
 	/* disable auto H8 */
-	reg = ufshcd_readl(hba, REG_AUTO_HIBERNATE_IDLE_TIMER);
-	reg = reg & (~UFS_AHIT_AH8ITV_MASK);
-	ufshcd_writel(hba, reg, REG_AUTO_HIBERNATE_IDLE_TIMER);
+	hba->ahit = 0;
 
 	/* Unipro PA_Local_TX_LCC_Enable */
 	ufshcd_disable_host_tx_lcc(hba);