linux-kernel - [PATCH] staging: rts5208: use usleep

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Date:   Mon, 2 Oct 2017 17:13:22 +0530
From:   Keerthi Reddy <keerthigd4990@...il.com>
To:     outreachy-kernel@...glegroups.com
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org
Subject: [PATCH] staging: rts5208: use usleep_range instead of udelay

Since a its a slow device, allow a small range of 100

Signed-off-by: Keerthi Reddy <Keerthigd4990@...il.com>
---
 drivers/staging/rts5208/rtsx_card.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rts5208/rtsx_card.c b/drivers/staging/rts5208/rtsx_card.c
index a6b7bff..418e29d 100644
--- a/drivers/staging/rts5208/rtsx_card.c
+++ b/drivers/staging/rts5208/rtsx_card.c
@@ -825,7 +825,7 @@ int switch_normal_clock(struct rtsx_chip *chip, int clk)
 	}
 
 	if (sd_vpclk_phase_reset) {
-		udelay(200);
+		usleep_range(200, 300);
 		retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
 					     PHASE_NOT_RESET, PHASE_NOT_RESET);
 		if (retval) {
@@ -838,7 +838,7 @@ int switch_normal_clock(struct rtsx_chip *chip, int clk)
 			rtsx_trace(chip);
 			return retval;
 		}
-		udelay(200);
+		usleep_range(200, 300);
 	}
 	retval = rtsx_write_register(chip, CLK_CTL, 0xFF, 0);
 	if (retval) {
-- 
2.7.4