[Intel-gfx] [PATCH] drm/i915: Kick fbdev before vgacon

[Daniel Vetter]

It's magic, but it seems to work.

This fixes a regression introduced in

commit 1bb9e632a0aeee1121e652ee4dc80e5e6f14bcd2
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Tue Jul 8 10:02:43 2014 +0200

    drm/i915: Only unbind vgacon, not other console drivers

My best guess is that the vga fbdev driver falls over if we rip out
parts of vgacon. Hooray.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82439
Cc: stable at vger.kernel.org
Reported-and-Tested-by: Lv Zheng <lv.zheng at intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/i915/i915_dma.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 5dc37f0233b2..56f62112411a 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1666,15 +1666,17 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 		goto out_regs;
 
 	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		ret = i915_kick_out_vgacon(dev_priv);
+		/* WARNING: Apparently we must kick fbdev drivers before vgacon,
+		 * otherwise the vga fbdev driver falls over. */
+		ret = i915_kick_out_firmware_fb(dev_priv);
 		if (ret) {
-			DRM_ERROR("failed to remove conflicting VGA console\n");
+			DRM_ERROR("failed to remove conflicting framebuffer drivers\n");
 			goto out_gtt;
 		}
 
-		ret = i915_kick_out_firmware_fb(dev_priv);
+		ret = i915_kick_out_vgacon(dev_priv);
 		if (ret) {
-			DRM_ERROR("failed to remove conflicting framebuffer drivers\n");
+			DRM_ERROR("failed to remove conflicting VGA console\n");
 			goto out_gtt;
 		}
 	}
-- 
2.1.1