[linux-next:master 7644/8126] drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:255:8: error: call to undeclared function 'devm_regulator_bulk_get_const'; ISO C99 and later do not support implicit function declarations

[linux-next:master 7644/8126] drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:255:8: error: call to undeclared function 'devm_regulator_bulk_get_const'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   985bf40edf4343dcb04c33f58b40b4a85c1776d4
commit: e0cb0c785250d0565c19ba17fc95bd7ab97670ba [7644/8126] drm/panel: visionox-vtdr6130: switch to devm_regulator_bulk_get_const
config: i386-randconfig-012-20240901 (https://download.01.org/0day-ci/archive/20240901/202409010839.kJVvn5zx-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240901/202409010839.kJVvn5zx-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409010839.kJVvn5zx-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:255:8: error: call to undeclared function 'devm_regulator_bulk_get_const'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     255 |         ret = devm_regulator_bulk_get_const(&dsi->dev,
         |               ^
   1 error generated.


vim +/devm_regulator_bulk_get_const +255 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c

   244	
   245	static int visionox_vtdr6130_probe(struct mipi_dsi_device *dsi)
   246	{
   247		struct device *dev = &dsi->dev;
   248		struct visionox_vtdr6130 *ctx;
   249		int ret;
   250	
   251		ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
   252		if (!ctx)
   253			return -ENOMEM;
   254	
 > 255		ret = devm_regulator_bulk_get_const(&dsi->dev,
   256						    ARRAY_SIZE(visionox_vtdr6130_supplies),
   257						    visionox_vtdr6130_supplies,
   258						    &ctx->supplies);
   259		if (ret < 0)
   260			return ret;
   261	
   262		ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
   263		if (IS_ERR(ctx->reset_gpio))
   264			return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
   265					     "Failed to get reset-gpios\n");
   266	
   267		ctx->dsi = dsi;
   268		mipi_dsi_set_drvdata(dsi, ctx);
   269	
   270		dsi->lanes = 4;
   271		dsi->format = MIPI_DSI_FMT_RGB888;
   272		dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_NO_EOT_PACKET |
   273				  MIPI_DSI_CLOCK_NON_CONTINUOUS;
   274		ctx->panel.prepare_prev_first = true;
   275	
   276		drm_panel_init(&ctx->panel, dev, &visionox_vtdr6130_panel_funcs,
   277			       DRM_MODE_CONNECTOR_DSI);
   278	
   279		ctx->panel.backlight = visionox_vtdr6130_create_backlight(dsi);
   280		if (IS_ERR(ctx->panel.backlight))
   281			return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
   282					     "Failed to create backlight\n");
   283	
   284		drm_panel_add(&ctx->panel);
   285	
   286		ret = mipi_dsi_attach(dsi);
   287		if (ret < 0) {
   288			dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
   289			drm_panel_remove(&ctx->panel);
   290			return ret;
   291		}
   292	
   293		return 0;
   294	}
   295	

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