Hi Dave, FYI, kernel build failed on tree: git://people.freedesktop.org/~airlied/linux.git drm-opt-power head: 7f201447cdbd4adf98393ed0c16e82161948ff87 commit: da023c32bfe87a6dc822e6c08f61af2e56d26a97 [79/80] gpu/vga: add driver control power feature. config: x86_64-nfsroot (attached as .config) All related error/warning messages: drivers/gpu/drm/i915/i915_dma.c: In function 'i915_load_modeset_init': drivers/gpu/drm/i915/i915_dma.c:1305:2: error: too many arguments to function 'vga_switcheroo_register_client' In file included from drivers/gpu/drm/i915/i915_dma.c:43:0: include/linux/vga_switcheroo.h:69:19: note: declared here vim +1305 drivers/gpu/drm/i915/i915_dma.c 1300 if (ret && ret != -ENODEV) 1301 goto out; 1302 1303 intel_register_dsm_handler(); 1304 > 1305 ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops, false); 1306 if (ret) 1307 goto cleanup_vga_client; 1308 1309 /* Initialise stolen first so that we may reserve preallocated 1310 * objects for the BIOS to KMS transition. --- 0-DAY kernel build testing backend Open Source Technology Centre Fengguang Wu Intel Corporation