From: Andi Kleen <andi@firstfloor.org>
Date: Mon, 13 Oct 2008 10:03:03 +0000 (+0200)
Subject: sysfs: Fix return values for sysdev_store_{ulong,int}
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4e318d7c6c9dd5cdae48bcf61558bbc0c09b12ac;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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

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@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 3ca9c5e8d765..c98c31ec2f75 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);