linux-kernel - [PATCH 2/5] cdrom: cleanup hardcoded error-code

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Message-ID: <20080322031047.GB3665@APFDCB5C>
Date:	Sat, 22 Mar 2008 12:10:48 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 2/5] cdrom: cleanup hardcoded error-code

This patch eliminates hardcoded return value of register_cdrom().

It also changes the return value to -EINVAL.
It is more appropriate than -2 (-ENOENT) because it is only
happen invalid usage of register_cdrom() by broken cdrom driver.

Signed-off-by: Akinobu Mita <akinobu.mita@...il.com>
Cc: Jens Axboe <axboe@...nel.dk>
---
 drivers/cdrom/cdrom.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: 2.6-git/drivers/cdrom/cdrom.c
===================================================================
--- 2.6-git.orig/drivers/cdrom/cdrom.c
+++ 2.6-git/drivers/cdrom/cdrom.c
@@ -393,7 +393,7 @@ int register_cdrom(struct cdrom_device_i
 	cdinfo(CD_OPEN, "entering register_cdrom\n"); 
 
 	if (cdo->open == NULL || cdo->release == NULL)
-		return -2;
+		return -EINVAL;
 	if (!banner_printed) {
 		printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
 		banner_printed = 1;
--
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