ACPI: add DMI to disable AML Vista compatibility on MSI GX723 Notebook

The brightness control hotkey don't work with Vista compatibility
because the MSI GX723 includes an infinite while loop in DSDT when
brightness control hotkey pressed.

The MSI GX723 uses Nvidia video.  Perhaps the loop is specific
to the Nvidia Vista driver...

This patch should be reverted once nouveau grows support
to call the ACPI NVIF method.

Signed-off-by: Lee, Chun-Yi <jlee@novell.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 2bb28b9d91c4..47cb4cb1f377 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -202,6 +202,23 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
                 },
         },
         {
+        /*
+         * There have a NVIF method in MSI GX723 DSDT need call by Nvidia
+         * driver (e.g. nouveau) when user press brightness hotkey.
+         * Currently, nouveau driver didn't do the job and it causes there
+         * have a infinite while loop in DSDT when user press hotkey.
+         * We add MSI GX723's dmi information to this table for workaround
+         * this issue.
+         * Will remove MSI GX723 from the table after nouveau grows support.
+         */
+        .callback = dmi_disable_osi_vista,
+        .ident = "MSI GX723",
+        .matches = {
+                     DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+                     DMI_MATCH(DMI_PRODUCT_NAME, "GX723"),
+                },
+        },
+        {
         .callback = dmi_disable_osi_vista,
         .ident = "Sony VGN-NS10J_S",
         .matches = {