diff mbox series

[v7,6/7] scsi: ufs: make HCE polling more compact to improve initialization latency

Message ID 20200318104016.28049-7-stanley.chu@mediatek.com (mailing list archive)
State Mainlined
Commit 9fc305ef8eb583b3139643f90abbe38d1c2412ce
Headers show
Series scsi: ufs: some cleanups and make the delay for host enabling customizable | expand

Commit Message

Stanley Chu March 18, 2020, 10:40 a.m. UTC 
Reduce the waiting period between each HCE (Host Controller Enable)
polling from 5 ms to 1 ms. In the same time, increase the maximum polling
times to make "total polling time" unchanged approximately.

This change could make HCE initializatoin faster to improve latency of
ufshcd initialization, error recovery, and resume behaviors.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
---
 drivers/scsi/ufs/ufshcd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index c5ee77a5bfc7..8edb91b19c33 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4304,7 +4304,7 @@  int ufshcd_hba_enable(struct ufs_hba *hba)
 	ufshcd_delay_us(hba->hba_enable_delay_us, 100);
 
 	/* wait for the host controller to complete initialization */
-	retry = 10;
+	retry = 50;
 	while (ufshcd_is_hba_active(hba)) {
 		if (retry) {
 			retry--;
@@ -4313,7 +4313,7 @@  int ufshcd_hba_enable(struct ufs_hba *hba)
 				"Controller enable failed\n");
 			return -EIO;
 		}
-		usleep_range(5000, 5100);
+		usleep_range(1000, 1100);
 	}
 
 	/* enable UIC related interrupts */