linux-kernel - [PATCH] mtd: fix the wrong timeo for panic_nand

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Message-Id: <1358824265-3425-1-git-send-email-shijie8@gmail.com>
Date:	Mon, 21 Jan 2013 22:11:05 -0500
From:	Huang Shijie <shijie8@...il.com>
To:	dwmw2@...radead.org
Cc:	dedekind1@...il.com, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Huang Shijie <shijie8@...il.com>
Subject: [PATCH] mtd: fix the wrong timeo for panic_nand_wait()

In nand_wait(), the timeo for panic_nand_wait() is assigned with
wrong value(jiffies + some delay).

This patch fixes it, and also uses the msecs_to_jiffies() to make the
code more readable.

Signed-off-by: Huang Shijie <shijie8@...il.com>
---
 drivers/mtd/nand/nand_base.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 8323ac9..acdd508 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -825,14 +825,9 @@ static void panic_nand_wait(struct mtd_info *mtd, struct nand_chip *chip,
 static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
 {
 
-	unsigned long timeo = jiffies;
+	unsigned long timeo = (state == FL_ERASING) ? 400 : 20;
 	int status, state = chip->state;
 
-	if (state == FL_ERASING)
-		timeo += (HZ * 400) / 1000;
-	else
-		timeo += (HZ * 20) / 1000;
-
 	led_trigger_event(nand_led_trigger, LED_FULL);
 
 	/*
@@ -849,6 +844,7 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
 	if (in_interrupt() || oops_in_progress)
 		panic_nand_wait(mtd, chip, timeo);
 	else {
+		timeo = jiffies + msecs_to_jiffies(timeo);
 		while (time_before(jiffies, timeo)) {
 			if (chip->dev_ready) {
 				if (chip->dev_ready(mtd))
-- 
1.7.4.4

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