From: Axel Lin <axel.lin@gmail.com>
Date: Tue, 20 Jul 2010 22:19:48 +0000 (-0700)
Subject: asus-laptop: return proper error for store_ledd if write_acpi_int fail
X-Git-Tag: v2.6.36-rc1~579^2~40
X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;h=6a984a06487129f013ee2df6ce98b6cfada1e7b1;p=net-next-2.6.git

asus-laptop: return proper error for store_ledd if write_acpi_int fail

In current implementation, store_ledd() does not return error if
write_acpi_int fail.  This patch fixes it by return -ENODEV if
write_acpi_int fail.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Corentin Chary <corentincj@iksaif.net>
Cc: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
---

diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 19445eaff6f..40897bab2eb 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -796,10 +796,11 @@ static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
 
 	rv = parse_arg(buf, count, &value);
 	if (rv > 0) {
-		if (write_acpi_int(asus->handle, METHOD_LEDD, value))
+		if (write_acpi_int(asus->handle, METHOD_LEDD, value)) {
 			pr_warning("LED display write failed\n");
-		else
-			asus->ledd_status = (u32) value;
+			return -ENODEV;
+		}
+		asus->ledd_status = (u32) value;
 	}
 	return rv;
 }