1 files changed, 22 insertions, 1 deletions

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 52dc2d8b8f22..c11936e13dd3 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -738,7 +738,6 @@ static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
  *      do_pata_set_dmamode - Initialize host controller PATA PIO timings
  *      @ap: Port whose timings we are configuring
  *      @adev: Drive in question
- *      @udma: udma mode, 0 - 6
  *      @isich: set if the chip is an ICH device
  *
  *      Set UDMA mode for device, in host controller PCI config space.
@@ -1067,6 +1066,28 @@ 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 (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"))
+                return 1;
+
         return 0;
 }