linux-kernel - [PATCH] net: usb: pegasus: Replace mdelay() with msleep() in setup_pegasus

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Message-Id: <20180727083629.18663-1-baijiaju1990@gmail.com>
Date:   Fri, 27 Jul 2018 16:36:29 +0800
From:   Jia-Ju Bai <baijiaju1990@...il.com>
To:     petkan@...leusys.com
Cc:     linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jia-Ju Bai <baijiaju1990@...il.com>
Subject: [PATCH] net: usb: pegasus: Replace mdelay() with msleep() in setup_pegasus_II()

setup_pegasus_II() is never called in atomic context.
It calls mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@...il.com>
---
 drivers/net/usb/pegasus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
index 6514c86f043e..f4247b275e09 100644
--- a/drivers/net/usb/pegasus.c
+++ b/drivers/net/usb/pegasus.c
@@ -1067,7 +1067,7 @@ static inline void setup_pegasus_II(pegasus_t *pegasus)
 
 	set_register(pegasus, Reg1d, 0);
 	set_register(pegasus, Reg7b, 1);
-	mdelay(100);
+	msleep(100);
 	if ((pegasus->features & HAS_HOME_PNA) && mii_mode)
 		set_register(pegasus, Reg7b, 0);
 	else
-- 
2.17.0