[PATCH v2] i2c: mediatek: disable zero-length transfers for mt8183

Qii Wang qii.wang at mediatek.com
Fri Aug 23 20:23:20 PDT 2019


On Fri, 2019-08-23 at 16:13 +0800, Hsin-Yi Wang wrote:
> On Fri, Aug 23, 2019 at 4:09 PM Qii Wang <qii.wang at mediatek.com> wrote:
> 
> > >
> > >  static u32 mtk_i2c_functionality(struct i2c_adapter *adap)
> > >  {
> > > -     return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
> > > +     if (adap->quirks->flags & I2C_AQ_NO_ZERO_LEN)
> > > +             return I2C_FUNC_I2C |
> > > +                     (I2C_FUNC_SMBUS_EMUL & ~I2C_FUNC_SMBUS_QUICK);
> > > +     else
> > > +             return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
> >
> > It can be removed?
> See previous discussion: https://patchwork.kernel.org/patch/10814391/#22484435
> but not all SoC's quirks has I2C_AQ_NO_ZERO_LEN.
ok, it looks good for me, thanks.
Reviewed-by: Qii Wang <qii.wang at mediatek.com>





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