SRU - LP283126 - sony-laptop: ignore missing _DIS method on pic device

[Steve Conklin]

>From 92838c8b1561157239e29a14fb25357e4d4c1d29 Mon Sep 17 00:00:00 2001
From: Matthew Garrett <mjg59 at srcf.ucam.org>
Date: Wed, 29 Oct 2008 14:01:03 -0700
Subject: [PATCH] sony-laptop: ignore missing _DIS method on pic device

Bug: #283126

At least the Vaio VGN-Z540N doesn't have this method, so let's not fail
to suspend just because it doesn't exist.

Signed-off-by: Adam Jackson <ajax at redhat.com>
Acked-by: Mattia Dongili <malattia at linux.it>
Cc: Len Brown <lenb at kernel.org>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
Signed-off-by: Steve Conklin <sconklin at canonical.com>

(cherry picked from commit 6158d3a2323835546c7cf83a170316fa77b726e0)
---
 drivers/misc/sony-laptop.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 60775be..b35eb92 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -2315,8 +2315,10 @@ end:
  */
 static int sony_pic_disable(struct acpi_device *device)
 {
-	if (ACPI_FAILURE(acpi_evaluate_object(device->handle,
-			"_DIS", NULL, NULL)))
+	acpi_status ret = acpi_evaluate_object(device->handle, "_DIS", NULL,
+					       NULL);
+
+	if (ACPI_FAILURE(ret) && ret != AE_NOT_FOUND)
 		return -ENXIO;
 
 	dprintk("Device disabled\n");
-- 
1.5.6.3