Messages in this thread | | | Date | Mon, 2 Jun 2014 15:34:17 +0100 | From | One Thousand Gnomes <> | Subject | Re: [PATCH 3/3] i2c: Make I2C ID tables non-mandatory for DT'ed and/or ACPI'ed devices |
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On Mon, 2 Jun 2014 14:41:03 +0100 Lee Jones <lee.jones@linaro.org> wrote:
> 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@linaro.org> > --- > drivers/i2c/i2c-core.c | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c > index d0c7180..811b78f 100644 > --- a/drivers/i2c/i2c-core.c > +++ b/drivers/i2c/i2c-core.c > @@ -271,7 +271,18 @@ 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 madatory, if and only if, a suitable Device
typo "madatory"..
> + * 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 && > + !of_match_device(dev->driver->of_match_table, dev)) > return -ENODEV; >
Looks sensible to me other than that.
> if (!device_can_wakeup(&client->dev))
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