[16/20] drm/i915: Ensure that while(INREG()) are bounded (v2)

Commit Message

Carlos R. Mafra Sept. 22, 2010, 8:32 a.m. UTC

None

Patch

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 6ec39a8..56b4c0b 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -111,6 +111,8 @@  static void intel_lvds_set_power(struct drm_device *dev, bool on)
 	if (on) {
 		I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN);
 		POSTING_READ(lvds_reg);
+		I915_WRITE(ctl_reg, I915_READ(ctl_reg) | PANEL_UNLOCK_REGS);
+		POSTING_READ(ctl_reg);
 
 		I915_WRITE(ctl_reg, I915_READ(ctl_reg) |
 			   POWER_TARGET_ON);