On Fri, Jan 26, 2018 at 02:14:38PM +0900, Andi Shyti wrote:
> Hi Simon and Dmitry,
>
> On Wed, Jan 24, 2018 at 01:32:01PM -0800, Dmitry Torokhov wrote:
> > From: Simon Shields <simon@xxxxxxxxxxxxx>
> >
> > MMS152 has no configuration registers, but the packet format used in
> > interrupts is identical to mms114.
> >
> > Signed-off-by: Simon Shields <simon@xxxxxxxxxxxxx>
> > Patchwork-Id: 10125841
> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
>
> also here
>
> Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxxx>
> Tested-by: Andi Shyti <andi.shyti@xxxxxxxxxxx>
>
> one small nitpick:
>
> > @@ -239,14 +249,33 @@ static int mms114_get_version(struct mms114_data *data)
> > {
> > struct device *dev = &data->client->dev;
> > u8 buf[6];
> > + int group;
> > int error;
>
> do we really need to define a new 'group' variable?
I like it, that's why I added it ;)
As Marcus mentioned, we cant use 'buf' to store the value as buf is
unsigned and i2c_smbus_read_byte_data() may return negative error code.
And I do not want to use 'error' variable because logically we are
trying to get group value, not error. Hence a dedicated variable. It's
gonna be optimized away anyway.
Thanks.
>
> Andi
>
> > - error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
> > - if (error < 0)
> > - return error;
> > + switch (data->type) {
> > + case TYPE_MMS152:
> > + error = __mms114_read_reg(data, MMS152_FW_REV, 3, buf);
> > + if (error)
> > + return error;
> > +
> > + group = i2c_smbus_read_byte_data(data->client,
> > + MMS152_COMPAT_GROUP);
> > + if (group < 0)
> > + return group;
> > +
> > + dev_info(dev, "TSP FW Rev: bootloader 0x%x / core 0x%x / config 0x%x, Compat group: %c\n",
> > + buf[0], buf[1], buf[2], group);
> > + break;
> > +
> > + case TYPE_MMS114:
> > + error = __mms114_read_reg(data, MMS114_TSP_REV, 6, buf);
> > + if (error)
> > + return error;
> >
> > - dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n",
> > - buf[0], buf[1], buf[3]);
> > + dev_info(dev, "TSP Rev: 0x%x, HW Rev: 0x%x, Firmware Ver: 0x%x\n",
> > + buf[0], buf[1], buf[3]);
> > + break;
> > + }
> >
> > return 0;
> > }
--
Dmitry
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