From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 31 Oct 2012 02:16:06 +0000 (+1000)
Subject: drm/nouveau: headless mode by default if pci class != vga display
X-Git-Tag: v3.2.34~78
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=9a8dc834132f413ba8206768b39577b0cde1742c;p=thirdparty%2Fkernel%2Fstable.git

drm/nouveau: headless mode by default if pci class != vga display

commit e412e95a268fa8544858ebfe066826b290430d51 upstream.

This is to prevent nouveau from taking over the console on headless boards
such as Tesla.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index 4ab35b588664a..8c084c0bcfd04 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -474,9 +474,7 @@ static int __init nouveau_init(void)
 #ifdef CONFIG_VGA_CONSOLE
 		if (vgacon_text_force())
 			nouveau_modeset = 0;
-		else
 #endif
-			nouveau_modeset = 1;
 	}
 
 	if (!nouveau_modeset)
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index d8831ab42bb90..01adcfb8101b5 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -46,6 +46,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nouveau_engine *engine = &dev_priv->engine;
+	u32 pclass = dev->pdev->class >> 8;
 
 	switch (dev_priv->chipset & 0xf0) {
 	case 0x00:
@@ -481,7 +482,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 	}
 
 	/* headless mode */
-	if (nouveau_modeset == 2) {
+	if (nouveau_modeset == 2 ||
+	    (nouveau_modeset < 0 && pclass != PCI_CLASS_DISPLAY_VGA)) {
 		engine->display.early_init = nouveau_stub_init;
 		engine->display.late_takedown = nouveau_stub_takedown;
 		engine->display.create = nouveau_stub_init;