linux-kernel - [PATCH 3/6] sysfs: Fix return values for sysdev_store

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Date:	Wed, 29 Oct 2008 15:58:09 -0700
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Andi Kleen <andi@...stfloor.org>, Andi Kleen <ak@...ux.intel.com>,
	stable <stable@...nel.org>, Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 3/6] sysfs: Fix return values for sysdev_store_{ulong,int}

From: Andi Kleen <andi@...stfloor.org>

SYSFS: Fix return values for sysdev_store_{ulong,int}

Always return the full size instead of the consumed
length of the string in sysdev_store_{ulong,int}

This avoids EINVAL errors in some echo versions.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
Cc: stable <stable@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/base/sys.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 3ca9c5e..c98c31e 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -488,7 +488,8 @@ ssize_t sysdev_store_ulong(struct sys_device *sysdev,
 	if (end == buf)
 		return -EINVAL;
 	*(unsigned long *)(ea->var) = new;
-	return end - buf;
+	/* Always return full write size even if we didn't consume all */
+	return size;
 }
 EXPORT_SYMBOL_GPL(sysdev_store_ulong);
 
@@ -511,7 +512,8 @@ ssize_t sysdev_store_int(struct sys_device *sysdev,
 	if (end == buf || new > INT_MAX || new < INT_MIN)
 		return -EINVAL;
 	*(int *)(ea->var) = new;
-	return end - buf;
+	/* Always return full write size even if we didn't consume all */
+	return size;
 }
 EXPORT_SYMBOL_GPL(sysdev_store_int);
 
-- 
1.6.0.2

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