This is a note to let you know that I've just added the patch titled
drm/i915: Kick fbdev before vgacon
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-kick-fbdev-before-vgacon.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 0485c9dc24ec0939b42ca5104c0373297506b555 Mon Sep 17 00:00:00 2001
From: Daniel Vetter <[email protected]>
Date: Fri, 14 Nov 2014 10:09:49 +0100
Subject: drm/i915: Kick fbdev before vgacon
From: Daniel Vetter <[email protected]>
commit 0485c9dc24ec0939b42ca5104c0373297506b555 upstream.
It's magic, but it seems to work.
This fixes a regression introduced in
commit 1bb9e632a0aeee1121e652ee4dc80e5e6f14bcd2
Author: Daniel Vetter <[email protected]>
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
Reported-and-tested-by: Lv Zheng <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Acked-by: Chris Wilson <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/i915_dma.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1670,15 +1670,17 @@ int i915_driver_load(struct drm_device *
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;
}
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.17/drm-i915-kick-fbdev-before-vgacon.patch
queue-3.17/drm-i915-drop-wasetupgtmodetdrowdispatch-snb.patch
queue-3.17/drm-i915-ignore-surflive-and-flip-counter-when-the-gpu-gets-reset.patch
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