Commit f08aebe9 authored by Hans de Goede's avatar Hans de Goede
Browse files

platform/x86: x86-android-tablets: Add support for preloading modules 



Since the x86-android-tablets code does all it work from module_init() it
cannot use -EPROBE_DEFER to wait for e.g. interrupt providing GPIO-chips
or PMIC-cells to show up.

To make sure things will still work when some necessary resource providers
are build as module allow the per board info to specify a list of modules
to pre-load before instantiating the I2C clients.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211229231431.437982-10-hdegoede@redhat.com
parent ef2ac114

drivers/platform/x86/x86-android-tablets.c

+8 −0
Original line number Diff line number Diff line
@@ -142,6 +142,7 @@ struct x86_serdev_info { 
};



struct x86_dev_info {

	const char * const *modules;

	struct gpiod_lookup_table **gpiod_lookup_tables;

	const struct x86_i2c_client_info *i2c_client_info;

	const struct platform_device_info *pdev_info;
@@ -428,6 +429,13 @@ static __init int x86_android_tablet_init(void) 


	dev_info = id->driver_data;



	/*

	 * Since this runs from module_init() it cannot use -EPROBE_DEFER,

	 * instead pre-load any modules which are listed as requirements.

	 */

	for (i = 0; dev_info->modules && dev_info->modules[i]; i++)

		request_module(dev_info->modules[i]);



	gpiod_lookup_tables = dev_info->gpiod_lookup_tables;

	for (i = 0; gpiod_lookup_tables && gpiod_lookup_tables[i]; i++)

		gpiod_add_lookup_table(gpiod_lookup_tables[i]);