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Subject[ammarfaizi2-block:google/android/kernel/common/android12-5.10-2022-01 1118/9999] drivers/gpu/drm/hisilicon/kirin/kirin_drm_dsi.c:33:6: warning: no previous prototype for 'dsi_set_output_client'
tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-5.10-2022-01
head: 1a4c05014bbef75d3878daa66540412c500f697b
commit: 34ebaf13befc0cd9274a190affbeae8e94f16ced [1118/9999] ANDROID: drm: kirin: Introduce kirin960
config: arm64-buildonly-randconfig-r005-20220331 (https://download.01.org/0day-ci/archive/20220331/202203311955.w1yVgOkn-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/ammarfaizi2/linux-block/commit/34ebaf13befc0cd9274a190affbeae8e94f16ced
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-5.10-2022-01
git checkout 34ebaf13befc0cd9274a190affbeae8e94f16ced
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/hisilicon/kirin/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> cc1: warning: include/drm: No such file or directory [-Wmissing-include-dirs]
--
>> cc1: warning: include/drm: No such file or directory [-Wmissing-include-dirs]
>> drivers/gpu/drm/hisilicon/kirin/kirin_drm_dsi.c:33:6: warning: no previous prototype for 'dsi_set_output_client' [-Wmissing-prototypes]
33 | void dsi_set_output_client(struct drm_device *dev)
| ^~~~~~~~~~~~~~~~~~~~~
In file included from drivers/gpu/drm/hisilicon/kirin/kirin_drm_dsi.c:28:
drivers/gpu/drm/hisilicon/kirin/kirin_drm_dsi.h:39:35: warning: 'dphy_range_info' defined but not used [-Wunused-const-variable=]
39 | static const struct dsi_phy_range dphy_range_info[] = {
| ^~~~~~~~~~~~~~~


vim +/dsi_set_output_client +33 drivers/gpu/drm/hisilicon/kirin/kirin_drm_dsi.c

32
> 33 void dsi_set_output_client(struct drm_device *dev)
34 {
35 enum dsi_output_client client;
36 struct drm_connector *connector;
37 struct drm_encoder *encoder;
38 struct drm_connector_list_iter conn_iter;
39 struct dw_dsi *dsi;
40
41 mutex_lock(&dev->mode_config.mutex);
42
43 /* find dsi encoder */
44 drm_for_each_encoder(encoder, dev)
45 if (encoder->encoder_type == DRM_MODE_ENCODER_DSI)
46 break;
47 dsi = encoder_to_dsi(encoder);
48
49 /* find HDMI connector */
50 drm_connector_list_iter_begin(dev, &conn_iter);
51 drm_for_each_connector_iter(connector, &conn_iter)
52 if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA)
53 break;
54 drm_connector_list_iter_end(&conn_iter);
55
56 /*
57 * set the proper dsi output client
58 */
59 client = connector->status == connector_status_connected ? OUT_HDMI :
60 OUT_PANEL;
61 if (client != dsi->cur_client) {
62 /*
63 * set the switch ic to select the HDMI or MIPI_DSI
64 */
65 if (hisi_dsi_ops->version == KIRIN960_DSI)
66 gpiod_set_value_cansleep(dsi->gpio_mux, client);
67
68 dsi->cur_client = client;
69 /* let the userspace know panel connector status has changed */
70 drm_sysfs_hotplug_event(dev);
71 DRM_INFO("client change to %s\n",
72 client == OUT_HDMI ? "HDMI" : "panel");
73 }
74
75 mutex_unlock(&dev->mode_config.mutex);
76 }
77 EXPORT_SYMBOL_GPL(dsi_set_output_client);
78 /************************for the panel attach to dsi*****************************/
79 static int dsi_connector_get_modes(struct drm_connector *connector)
80 {
81 struct dw_dsi *dsi = connector_to_dsi(connector);
82
83 return drm_panel_get_modes(dsi->panel, connector);
84 }
85

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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