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authorTejun Heo <tj@kernel.org>2008-11-29 22:37:21 +0900
committerJeff Garzik <jgarzik@redhat.com>2008-12-01 13:48:45 -0500
commit1eedb4a90c958d8d59e0e4f19c297b445df21cf9 (patch)
tree08ddd40946afb40046bcb6b1eecade1bfee236db
parentd9d060a98ff89fe0f86e24c9c0c3d2f0c566781c (diff)
downloadlinux-stericsson-1eedb4a90c958d8d59e0e4f19c297b445df21cf9.tar.gz
ata_piix: add borked Tecra M4 to broken suspend list
Tecra M4 sometimes forget what it is and reports bogus data via DMI which makes the machine evade broken suspend matching and thus fail suspend/resume. This patch updates piix_broken_suspend() such that it can match such case. As the borked DMI data is a bit generic, matching many entries to make the match more specific is necessary. As the usual DMI matching is limited to four entries, this patch uses hard coded manual matching. This is reported by Alexandru Romanescu. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Alexandru Romanescu <a_romanescu@yahoo.co.uk> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
-rw-r--r--drivers/ata/ata_piix.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 8e37be19bbf5..d6d97d8f3fa4 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1066,6 +1066,21 @@ static int piix_broken_suspend(void)
if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
return 1;
+ /* TECRA M4 sometimes forgets its identify and reports bogus
+ * DMI information. As the bogus information is a bit
+ * generic, match as many entries as possible. This manual
+ * matching is necessary because dmi_system_id.matches is
+ * limited to four entries.
+ */
+ if (!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"))
+ return 1;
+
return 0;
}