From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= <bonbons@linux-vserver.org>
Subject: [PATCH 1/2] ide: Stop disks on reboot for laptop which cuts power
Date: Sat, 18 Apr 2009 12:45:58 +0200
Message-ID: <20090418124558.0426f74c@neptune.home>
References: <20090418124415.1dc82273@neptune.home>
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To: Linux IDE <linux-ide@vger.kernel.org>, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>, Linux Kernel <linux-kernel@vger.kernel.org>, Linux SCSI <linux-scsi@vger.kernel.org>

My laptop (Acer Travelmate 660) always cuts the power when rebooting
which causes the disk to emergency-park it's head.

Add a dmi check to stop disk as for shutdown on this laptop.

Signed-off-by: Bruno Pr=C3=A9mont <bonbons@linux-vserver.org>
---
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index 1aebdf1..4b6b71e 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -7,6 +7,7 @@
 #include <linux/mutex.h>
 #include <linux/ide.h>
 #include <linux/hdreg.h>
+#include <linux/dmi.h>
=20
 #if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
 #define IDE_DISK_MINORS		(1 << PARTN_BITS)
@@ -99,6 +100,19 @@ static void ide_gd_resume(ide_drive_t *drive)
 		(void)drive->disk_ops->get_capacity(drive);
 }
=20
+static const struct dmi_system_id ide_coldreboot_table[] =3D {
+	{
+		/* Acer TravelMate 66x cuts power during reboot */
+		.ident   =3D "Acer TravelMate 660",
+		.matches =3D {
+			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 660"),
+		},
+	},
+
+	{ }	/* terminate list */
+};
+
 static void ide_gd_shutdown(ide_drive_t *drive)
 {
 #ifdef	CONFIG_ALPHA
@@ -115,7 +129,8 @@ static void ide_gd_shutdown(ide_drive_t *drive)
 	   the disk to expire its write cache. */
 	if (system_state !=3D SYSTEM_POWER_OFF) {
 #else
-	if (system_state =3D=3D SYSTEM_RESTART) {
+	if (system_state =3D=3D SYSTEM_RESTART &&
+		!dmi_check_system(ide_coldreboot_table)) {
 #endif
 		drive->disk_ops->flush(drive);
 		return;