linux-kernel - [PATCH 1/4] rts5208: Fix usleep_range is preferred over udelay

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Date:   Wed, 19 Jun 2019 17:46:45 +0200
From:   Lukas Schneider <lukas.s.schneider@....de>
To:     kim.jamie.bradley@...il.com, pakki001@....edu,
        colin.king@...onical.com, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Cc:     Lukas Schneider <lukas.s.schneider@....de>,
        Jannik Moritz <jannik.moritz@....de>, linux-kernel@...cs.fau.de
Subject: [PATCH 1/4] rts5208: Fix usleep_range is preferred over udelay

This patch fixes the issue reported by checkpatch:

CHECK: usleep_range is preferred over udelay;
see Documentation/timers/timers-howto.txt

It's save to sleep here instead of using busy waiting,
because we are not in an atomic context.

Signed-off-by: Lukas Schneider <lukas.s.schneider@....de>
Signed-off-by: Jannik Moritz <jannik.moritz@....de>
Cc: <linux-kernel@...cs.fau.de>
---
 drivers/staging/rts5208/ms.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rts5208/ms.c b/drivers/staging/rts5208/ms.c
index 1128eec3bd08..264887d8b3e6 100644
--- a/drivers/staging/rts5208/ms.c
+++ b/drivers/staging/rts5208/ms.c
@@ -3237,7 +3237,7 @@ static int ms_write_multiple_pages(struct rtsx_chip *chip, u16 old_blk,
 			return STATUS_FAIL;
 		}
 
-		udelay(30);
+		usleep_range(30, 40);
 
 		rtsx_init_cmd(chip);
 
@@ -4159,7 +4159,7 @@ int mg_set_ICV(struct scsi_cmnd *srb, struct rtsx_chip *chip)
 
 #ifdef MG_SET_ICV_SLOW
 	for (i = 0; i < 2; i++) {
-		udelay(50);
+		usleep_range(50, 60);
 
 		rtsx_init_cmd(chip);
 
-- 
2.19.1