linux-kernel - [PATCH 2/2] ATA: piix, cleanup dmi strings checking

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Date:	Wed, 10 Dec 2008 14:07:22 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	linux-kernel@...r.kernel.org, Jiri Slaby <jirislaby@...il.com>,
	Jeff Garzik <jgarzik@...hat.com>,
	Alexandru Romanescu <a_romanescu@...oo.co.uk>,
	Tejun Heo <tj@...nel.org>, Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: [PATCH 2/2] ATA: piix, cleanup dmi strings checking

Commit
ATA: piix, fix pointer deref on suspend
fixed a possible oops in an ugly manner. Use newly introduced dmi_match()
to make the code pretty again.

Signed-off-by: Jiri Slaby <jirislaby@...il.com>
Cc: Jeff Garzik <jgarzik@...hat.com>
Cc: Alexandru Romanescu <a_romanescu@...oo.co.uk>
Cc: Tejun Heo <tj@...nel.org>
Cc: Alan Cox <alan@...rguk.ukuu.org.uk>
---
 drivers/ata/ata_piix.c |   21 +++++++--------------
 1 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index c11936e..5fdf167 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1072,20 +1072,13 @@ static int piix_broken_suspend(void)
 	 * matching is necessary because dmi_system_id.matches is
 	 * limited to four entries.
 	 */
-	if (dmi_get_system_info(DMI_SYS_VENDOR) &&
-	    dmi_get_system_info(DMI_PRODUCT_NAME) &&
-	    dmi_get_system_info(DMI_PRODUCT_VERSION) &&
-	    dmi_get_system_info(DMI_PRODUCT_SERIAL) &&
-	    dmi_get_system_info(DMI_BOARD_VENDOR) &&
-	    dmi_get_system_info(DMI_BOARD_NAME) &&
-	    dmi_get_system_info(DMI_BOARD_VERSION) &&
-	    !strcmp(dmi_get_system_info(DMI_SYS_VENDOR), "TOSHIBA") &&
-	    !strcmp(dmi_get_system_info(DMI_PRODUCT_NAME), "000000") &&
-	    !strcmp(dmi_get_system_info(DMI_PRODUCT_VERSION), "000000") &&
-	    !strcmp(dmi_get_system_info(DMI_PRODUCT_SERIAL), "000000") &&
-	    !strcmp(dmi_get_system_info(DMI_BOARD_VENDOR), "TOSHIBA") &&
-	    !strcmp(dmi_get_system_info(DMI_BOARD_NAME), "Portable PC") &&
-	    !strcmp(dmi_get_system_info(DMI_BOARD_VERSION), "Version A0"))
+	if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") &&
+	    dmi_match(DMI_PRODUCT_NAME, "000000") &&
+	    dmi_match(DMI_PRODUCT_VERSION, "000000") &&
+	    dmi_match(DMI_PRODUCT_SERIAL, "000000") &&
+	    dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") &&
+	    dmi_match(DMI_BOARD_NAME, "Portable PC") &&
+	    dmi_match(DMI_BOARD_VERSION, "Version A0"))
 		return 1;
 
 	return 0;
-- 
1.6.0.5

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