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SubjectRe: [PATCH] drm/qxl: unbind vgacon
Hi Gerd,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.0-rc4 next-20190221]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Gerd-Hoffmann/drm-qxl-unbind-vgacon/20190222-030117
config: x86_64-randconfig-m2-02211051 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

ld: drivers/gpu/drm/qxl/qxl_drv.o: in function `qxl_pci_probe':
>> drivers/gpu/drm/qxl/qxl_drv.c:94: undefined reference to `dummy_con'
>> ld: drivers/gpu/drm/qxl/qxl_drv.c:94: undefined reference to `do_take_over_console'

vim +94 drivers/gpu/drm/qxl/qxl_drv.c

61
62 static int
63 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
64 {
65 struct qxl_device *qdev;
66 int ret;
67
68 if (pdev->revision < 4) {
69 DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
70 " use xf86-video-qxl in user mode");
71 return -EINVAL; /* TODO: ENODEV ? */
72 }
73
74 qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
75 if (!qdev)
76 return -ENOMEM;
77
78 ret = pci_enable_device(pdev);
79 if (ret)
80 goto free_dev;
81
82 ret = qxl_device_init(qdev, &qxl_driver, pdev);
83 if (ret)
84 goto disable_pci;
85
86 ret = qxl_modeset_init(qdev);
87 if (ret)
88 goto unload;
89
90 drm_kms_helper_poll_init(&qdev->ddev);
91
92 /* unbind vgacon to make sure it doesn't touch our vga registers */
93 console_lock();
> 94 ret = do_take_over_console(&dummy_con, 0, MAX_NR_CONSOLES - 1, true);
95 console_unlock();
96
97 /* Complete initialization. */
98 ret = drm_dev_register(&qdev->ddev, ent->driver_data);
99 if (ret)
100 goto modeset_cleanup;
101
102 return 0;
103
104 modeset_cleanup:
105 qxl_modeset_fini(qdev);
106 unload:
107 qxl_device_fini(qdev);
108 disable_pci:
109 pci_disable_device(pdev);
110 free_dev:
111 kfree(qdev);
112 return ret;
113 }
114

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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