From: Hans de Goede Date: Wed, 29 Dec 2021 23:14:28 +0000 (+0100) Subject: platform/x86: x86-android-tablets: Add support for preloading modules X-Git-Tag: v6.1-rc5~2286^2~7 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f08aebe9af935422ec58ff3003eda4dfb91d2dd2;p=platform%2Fkernel%2Flinux-starfive.git 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: Hans de Goede Link: https://lore.kernel.org/r/20211229231431.437982-10-hdegoede@redhat.com --- diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c index 0b521e4..3c01c86 100644 --- a/drivers/platform/x86/x86-android-tablets.c +++ b/drivers/platform/x86/x86-android-tablets.c @@ -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]);