linux-kernel - [PATCH] drivers: s390: remove custom implementation of hex_to

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Message-Id: <1284212198-25849-1-git-send-email-andy.shevchenko@gmail.com>
Date:	Sat, 11 Sep 2010 16:36:38 +0300
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Andy Shevchenko <andy.shevchenko@...il.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux390@...ibm.com, linux-s390@...r.kernel.org
Subject: [PATCH] drivers: s390: remove custom implementation of hex_to_bin()

Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: linux390@...ibm.com
Cc: linux-s390@...r.kernel.org
---
 drivers/s390/cio/blacklist.c |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index 13cb601..76058a5 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -79,17 +79,15 @@ static int pure_hex(char **cp, unsigned int *val, int min_digit,
 		    int max_digit, int max_val)
 {
 	int diff;
-	unsigned int value;
 
 	diff = 0;
 	*val = 0;
 
-	while (isxdigit(**cp) && (diff <= max_digit)) {
+	while (diff <= max_digit) {
+		int value = hex_to_bin(**cp);
 
-		if (isdigit(**cp))
-			value = **cp - '0';
-		else
-			value = tolower(**cp) - 'a' + 10;
+		if (value < 0)
+			break;
 		*val = *val * 16 + value;
 		(*cp)++;
 		diff++;
-- 
1.7.2.2

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