linux-kernel - drivers/mtd/devices/doc2000.c - address of 'eccbuf' will always evaluate as 'true' , warnings

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Date:	Sun, 22 Jul 2007 14:13:26 +0200
From:	Gabriel C <nix.or.die@...glemail.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
CC:	David Woodhouse <dwmw2@...radead.org>
Subject: drivers/mtd/devices/doc2000.c - address of 'eccbuf' will always evaluate
 as 'true' , warnings

Hi,

I noticed this warnings on current git with gcc 4.2.1

....

drivers/mtd/devices/doc2000.c: In function 'doc_read':
drivers/mtd/devices/doc2000.c:635: warning: the address of 'eccbuf' will always evaluate as 'true'
drivers/mtd/devices/doc2000.c: In function 'doc_write':
drivers/mtd/devices/doc2000.c:899: warning: the address of 'eccbuf' will always evaluate as 'true'

....

This patch fixes it but maybe there is a better way to do it.


Signed-off-by: Gabriel Craciunescu <nix.or.die@...glemail.com>
---


diff --git a/drivers/mtd/devices/doc2000.c b/drivers/mtd/devices/doc2000.c
index c73e96b..ce8fbf5 100644
--- a/drivers/mtd/devices/doc2000.c
+++ b/drivers/mtd/devices/doc2000.c
@@ -632,7 +632,7 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
 			len = ((from | 0x1ff) + 1) - from;
 
 		/* The ECC will not be calculated correctly if less than 512 is read */
-		if (len != 0x200 && eccbuf)
+		if (len != 0x200 && eccbuf != NULL)
 			printk(KERN_WARNING
 			       "ECC needs a full sector read (adr: %lx size %lx)\n",
 			       (long) from, (long) len);
@@ -896,7 +896,7 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
 		/* Let the caller know we completed it */
 		*retlen += len;
 
-		if (eccbuf) {
+		if (eccbuf != NULL) {
 			unsigned char x[8];
 			size_t dummy;
 			int ret;

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