Messages in this thread Patch in this message | | | From | Javier Martinez Canillas <> | Subject | [PATCH] backlight: da9052: Fix module autoload | Date | Mon, 2 Jan 2017 13:03:27 -0300 |
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The driver has a platform device ID table with multiple device entries, each setting a different register address in its driver_data to control the WLED brightness.
But the driver doesn't export these as aliases with MODULE_DEVICE_TABLE() when the driver is built as a module, instead it just has a single alias using MODULE_ALIAS("platform:da9052-backlight"). That is clearly wrong since there isn't a "da9052-backlight" in the platform device ID table, so if that device name is used, the device won't even match the driver.
So instead of having a wrong alias, export the ones in the dev ID table.
Before this patch:
$ modinfo drivers/video/backlight/da9052_bl.ko | grep alias alias: platform:da9052-backlight
After this patch:
$ modinfo drivers/video/backlight/da9052_bl.ko | grep alias alias: platform:da9052-wled3 alias: platform:da9052-wled2 alias: platform:da9052-wled1
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> ---
drivers/video/backlight/da9052_bl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/backlight/da9052_bl.c b/drivers/video/backlight/da9052_bl.c index fd2be417aa64..49035c12739a 100644 --- a/drivers/video/backlight/da9052_bl.c +++ b/drivers/video/backlight/da9052_bl.c @@ -167,6 +167,7 @@ static const struct platform_device_id da9052_wled_ids[] = { }, { }, }; +MODULE_DEVICE_TABLE(platform, da9052_wled_ids); static struct platform_driver da9052_wled_driver = { .probe = da9052_backlight_probe, @@ -182,4 +183,3 @@ module_platform_driver(da9052_wled_driver); MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); MODULE_DESCRIPTION("Backlight driver for DA9052 PMIC"); MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:da9052-backlight"); -- 2.7.4
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