linux-kernel - [PATCH][5/5][resend] floppy.c: Fix device_create

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Date:	Mon, 19 Mar 2007 16:11:13 +0100
From:	Jesper Juhl <jesper.juhl@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Andi Kleen <ak@...e.de>,
	Trent Waddington <trent.waddington@...il.com>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Jesper Juhl <jesper.juhl@...il.com>
Subject: [PATCH][5/5][resend] floppy.c: Fix device_create_file() warning


    This fixes the warning
      warning: ignoring return value of `device_create_file', declared with attribute warn_unused_result in function `floppy_init'.
    It does this by checking the return value and printing a warning message in case of no success.
    
Signed-off-by: Jesper Juhl <jesper.juhl@...il.com>
Acked-by: Alan Cox <alan@...hat.com>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 577c621..9d543f3 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4302,7 +4302,12 @@ static int __init floppy_init(void)
 		if (err)
 			goto out_flush_work;
 
-		device_create_file(&floppy_device[drive].dev,&dev_attr_cmos);
+		err = device_create_file(&floppy_device[drive].dev, &dev_attr_cmos);
+		if (err)
+			printk(KERN_WARNING "Unable to create sysfs attribute "
+				"file for floppy device: %s\n", 
+				floppy_device[drive].name);
+
 		/* to be cleaned up... */
 		disks[drive]->private_data = (void *)(long)drive;
 		disks[drive]->queue = floppy_queue;
-
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