linux-kernel - [PATCH] asus-laptop: return proper error for store_ledd if write_acpi

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Date:	Thu, 08 Jul 2010 13:55:35 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Corentin Chary <corentincj@...aif.net>,
	Matthew Garrett <mjg@...hat.com>,
	Alan Jenkins <alan-jenkins@...fmail.co.uk>,
	acpi4asus-user@...ts.sourceforge.net,
	platform-driver-x86@...r.kernel.org
Subject: [PATCH] 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@...il.com>
---
 drivers/platform/x86/asus-laptop.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 93487eb..975751d 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;
 }
-- 
1.5.4.3



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