Currently the I2C framework insists on devices supplying an I2C ID table. Many of the devices which do so unnecessarily adding quite a few wasted lines to kernel code. This patch allows drivers a means to 'not' supply the aforementioned table and match on either DT and/or ACPI match tables instead. Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> --- drivers/i2c/i2c-core.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index e8c2cba..71970da 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -100,7 +100,7 @@ static int i2c_device_match(struct device *dev, struct device_driver *drv) /* Attempt an OF style match */ - if (of_driver_match_device(dev, drv)) + if (i2c_of_match_device(drv->of_match_table, dev)) return 1; /* Then ACPI style match */ @@ -268,7 +268,18 @@ static int i2c_device_probe(struct device *dev) return 0; driver = to_i2c_driver(dev->driver); - if (!driver->probe || !driver->id_table) + if (!driver->probe) + return -EINVAL; + + /* + * An I2C ID table is not mandatory, if and only if, a suitable Device + * Tree and/or ACPI match table entry is supplied for the probing + * device. + * + * TODO: Provide 'device type' to 'ACPI node' call and match here. + */ + if (!driver->id_table && + !i2c_of_match_device(dev->driver->of_match_table, dev)) return -ENODEV; if (!device_can_wakeup(&client->dev)) -- 1.8.3.2 -- 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
