Hi Geert,
On Tue, May 30, 2017 at 10:31:21AM +0200, Geert Uytterhoeven wrote:
> Hi Jacopo,
>
> On Tue, May 30, 2017 at 10:13 AM, Jacopo Mondi
> <jacopo+renesas@xxxxxxxxxx> wrote:
> > I2c-mux channels are created with the mux parent device as their own
> > parent, while they should be siblings of the mux itself.
>
> Isn't it the other way around? Cfr. the example and the patch.
Yeah, I actually didn't know the exact meaning of "siblings" then.
So:
I2c-mux channels are created as mux siblings while they should be
children of the mux itself. Fix it.
Any better? ;)
Thanks
j
>
> > Fix this.
> >
> > Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
> > Suggested-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> >
> > ---
> >
> > Hello,
> > while inspecting child nodes of an i2c adapter it has been noted that
> > child devices of an i2c-mux are listed as children of the i2c adapter itself,
> > and not of the i2c-mux.
> >
> > The hierarchy of devices looked like
> >
> > -- i2c-04
> > --- eeprom@57
> > --- video_receiver@70
> > --- video_receiver@34
> > --- gmsl-deserializer@0 <-- MUX
> > --- gmsl-deserializer@0/i2c@0 <-- MUX CHANNEL
>
> = sibling of mux
>
> >
> > It now looks like
> >
> > -- i2c-04
> > --- eeprom@57
> > --- video_receiver@70
> > --- video_receiver@34
> > --- gmsl-deserializer@0
> > ---- gmsl-deserializer@0/i2c@0
>
> = child of mux
>
> >
> > drivers/i2c/i2c-mux.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/i2c/i2c-mux.c b/drivers/i2c/i2c-mux.c
> > index 83768e8..37b7804 100644
> > --- a/drivers/i2c/i2c-mux.c
> > +++ b/drivers/i2c/i2c-mux.c
> > @@ -324,7 +324,7 @@ int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
> > priv->adap.owner = THIS_MODULE;
> > priv->adap.algo = &priv->algo;
> > priv->adap.algo_data = priv;
> > - priv->adap.dev.parent = &parent->dev;
>
> = sibling of mux
>
> > + priv->adap.dev.parent = muxc->dev;
>
> = child of mux
>
> > priv->adap.retries = parent->retries;
> > priv->adap.timeout = parent->timeout;
> > priv->adap.quirks = parent->quirks;
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
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