drm: drop mtrr from i915

Alan Hourihane wants to set MTRR in the DDX only as otherwise
we get problems with the shared memory chipset.

From: Alan Hourihane <alanh@fairlite.demon.co.uk>
Signed-off-by: Dave Airlie <airlied@linux.ie>

diff --git a/drivers/char/drm/i915_drv.c b/drivers/char/drm/i915_drv.c
index 32b7f8bb420da70af9a3bdf21ad2b89932f85ea9..e88d32d286f5f97b9b555e41cb38b91e2592aac1 100644 (file)
--- a/drivers/char/drm/i915_drv.c
+++ b/drivers/char/drm/i915_drv.c
@@ -39,8 +39,11 @@ static struct pci_device_id pciidlist[] = {
 };
 
 static struct drm_driver driver = {
+       /* don't use mtrr's here, the Xserver or user space app should
+        * deal with them for intel hardware.
+        */
        .driver_features =
-           DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR |
+           DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
            DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
        .load = i915_driver_load,
        .lastclose = i915_driver_lastclose,