On Fri, Oct 12, 2012 at 10:34:18AM +0800, Bo Shen wrote: > As the old method will use platform device id, change the id to > let the i2c device work What are "the old method" and new method? You're not explaining why this is needed... > static struct platform_device at91sam9260_twi_device = { > .name = "i2c-gpio", > - .id = -1, > + .id = 0, > .dev.platform_data = &pdata, This looks like a regression, if there's only one of a given type of device in the system it should have no numeric ID in the display name so having -1 is appropriate. -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html