linux-kernel - RE: [PATCH] wan: Use usleep

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Message-ID: <E603DC592C92B54A89CEF6B0919A0B1CAFDE223D13@SOLO.hq.farsitecommunications.com>
Date:	Mon, 2 Jun 2014 09:56:26 +0100
From:	Kevin Curtis <Kevin.Curtis@...site.com>
To:	Manuel Schölling <manuel.schoelling@....de>
CC:	"davem@...emloft.net" <davem@...emloft.net>,
	"joe@...ches.com" <joe@...ches.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] wan: Use usleep_range()

Hi Manuel,
   This look fine to me.

Regards

Kevin

-----Original Message-----
From: Manuel Schölling [mailto:manuel.schoelling@....de] 
Sent: 31 May 2014 16:08
To: Kevin Curtis
Cc: davem@...emloft.net; joe@...ches.com; netdev@...r.kernel.org; linux-kernel@...r.kernel.org; Manuel Schölling
Subject: [PATCH] wan: Use usleep_range()

Instead of using a jiffies hack we can use the standard api for delays.

Signed-off-by: Manuel Schölling <manuel.schoelling@....de>
---
 drivers/net/wan/farsync.c |   10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c index bcfff0d..02f6d1c 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c
@@ -26,6 +26,7 @@
 #include <linux/ioport.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/delay.h>
 #include <linux/if.h>
 #include <linux/hdlc.h>
 #include <asm/io.h>
@@ -678,7 +679,6 @@ static inline void
 fst_cpureset(struct fst_card_info *card)  {
 	unsigned char interrupt_line_register;
-	unsigned long j = jiffies + 1;
 	unsigned int regval;
 
 	if (card->family == FST_FAMILY_TXU) {
@@ -696,16 +696,12 @@ fst_cpureset(struct fst_card_info *card)
 		/*
 		 * We are delaying here to allow the 9054 to reset itself
 		 */
-		j = jiffies + 1;
-		while (jiffies < j)
-			/* Do nothing */ ;
+		usleep_range(10, 20);
 		outw(0x240f, card->pci_conf + CNTRL_9054 + 2);
 		/*
 		 * We are delaying here to allow the 9054 to reload its eeprom
 		 */
-		j = jiffies + 1;
-		while (jiffies < j)
-			/* Do nothing */ ;
+		usleep_range(10, 20);
 		outw(0x040f, card->pci_conf + CNTRL_9054 + 2);
 
 		if (pci_write_config_byte
--
1.7.10.4