drm/nouveau: we can't free ACPI EDID, so make a copy that we can

The rest of the connector code assumes we can kfree() the EDID pointer.
This causes things to blow up with the ACPI EDID pointer we get
passed.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c
index c17a055ee3e57c3a356f2fd4d3b85d4432f7d4e5..119152606e4c97af9583b451415954637d1a4d74 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -292,6 +292,6 @@ nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector)
        if (ret < 0)
                return ret;
 
-       nv_connector->edid = edid;
+       nv_connector->edid = kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
        return 0;
 }