drm/i915: Disable FBC on 915GM and 945GM.

It is causing hangs after a suspend/resume cycle with the default
powersave=1 module option on these chipsets since 2.6.32-rc.

BugLink: http://bugs.launchpad.net/bugs/492392
Signed-off-by: Robert Hooker <sarvatt@ubuntu.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 4b26919..1a39ec7 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -80,14 +80,14 @@ const static struct intel_device_info intel_i915g_info = {
        .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
 };
 const static struct intel_device_info intel_i915gm_info = {
-       .is_i9xx = 1,  .is_mobile = 1, .has_fbc = 1,
+       .is_i9xx = 1,  .is_mobile = 1,
        .cursor_needs_physical = 1,
 };
 const static struct intel_device_info intel_i945g_info = {
        .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
 };
 const static struct intel_device_info intel_i945gm_info = {
-       .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
+       .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1,
        .has_hotplug = 1, .cursor_needs_physical = 1,
 };
 

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 58fc7fa..f021490 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4814,7 +4814,7 @@ static void intel_init_display(struct drm_device *dev)
                        dev_priv->display.fbc_enabled = g4x_fbc_enabled;
                        dev_priv->display.enable_fbc = g4x_enable_fbc;
                        dev_priv->display.disable_fbc = g4x_disable_fbc;
-               } else if (IS_I965GM(dev) || IS_I945GM(dev) || IS_I915GM(dev)) {
+               } else if (IS_I965GM(dev)) {
                        dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
                        dev_priv->display.enable_fbc = i8xx_enable_fbc;
                        dev_priv->display.disable_fbc = i8xx_disable_fbc;