[Intel-gfx] [PATCH] agp/intel: put back check that we have a driver for the bridge.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

On my 945 laptop + radeon GPU, I was getting an oops on boot without this
check which seems to have gotten dropped in the rework.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 drivers/char/agp/intel-agp.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 07a9aad..034644e 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -885,6 +885,14 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
 		return -ENODEV;
 	}
 
+	if (!bridge->driver) {
+		if (cap_ptr)
+			dev_warn(&pdev->dev, "can't find bridge device (chip_id: %04x)\n",
+			    	 intel_agp_chipsets[i].gmch_chip_id);
+		agp_put_bridge(bridge);
+		return -ENODEV;
+	}
+
 	bridge->dev = pdev;
 	bridge->dev_private_data = NULL;
 
-- 
1.6.6.1