linux-kernel - [PATCH] ACPI / PM: Do not save/restore NVS on Sony Vaio VGN-NW130D

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Date:	Sun, 12 Dec 2010 21:10:42 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Len Brown <lenb@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	"Linux-pm mailing list" <linux-pm@...ts.linux-foundation.org>,
	Adriano <adriano.vilela@...oo.com>
Subject: [PATCH] ACPI / PM: Do not save/restore NVS on Sony Vaio VGN-NW130D

From: Rafael J. Wysocki <rjw@...k.pl>

The saving of the NVS memory area during suspend and restoring it
during resume causes problems to appear on Sony Vaio VGN-NW130D, so
blacklist that machine to avoid those problems.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=23002

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
Reported-and-tested-by: Adriano <adriano.vilela@...oo.com>
---

Hi Len,

Another Vaio needing acpi_sleep=nonvs, please apply.

Thanks,
Rafael

---
 drivers/acpi/sleep.c |    8 ++++++++
 1 file changed, 8 insertions(+)

Index: linux-2.6/drivers/acpi/sleep.c
===================================================================
--- linux-2.6.orig/drivers/acpi/sleep.c
+++ linux-2.6/drivers/acpi/sleep.c
@@ -427,6 +427,14 @@ static struct dmi_system_id __initdata a
 		DMI_MATCH(DMI_PRODUCT_NAME, "VPCEB1Z1E"),
 		},
 	},
+	{
+	.callback = init_nvs_nosave,
+	.ident = "Sony Vaio VGN-NW130D",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NW130D"),
+		},
+	},
 	{},
 };
 #endif /* CONFIG_SUSPEND */
--
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