On Wed, 8 Feb 2017 08:48:54 +0000
Lee Jones <lee.jones@xxxxxxxxxx> wrote:
> On Wed, 08 Feb 2017, Stephen Rothwell wrote:
>
> > Hi Linus,
>
> I believe this patch would need to go in via Greg's tree.
>
> (see below)
>
> > After merging the gpio tree, today's linux-next build (arm
> > multi_v7_defconfig) failed like this:
> >
> > drivers/tty/serial/st-asc.c: In function 'asc_set_termios':
> > drivers/tty/serial/st-asc.c:578:12: error: implicit declaration of function 'devm_get_gpiod_from_child' [-Werror=implicit-function-declaration]
> > gpiod = devm_get_gpiod_from_child(port->dev, "rts",
> > ^
> > drivers/tty/serial/st-asc.c:578:10: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
> > gpiod = devm_get_gpiod_from_child(port->dev, "rts",
> > ^
> >
> > Caused by commits
> >
> > a264d10ff45c ("gpiolib: Convert fwnode_get_named_gpiod() to configure GPIO")
> > b2987d7438e0 ("gpio: Pass GPIO label down to gpiod_request")
> > 4b0947974e59 ("gpio: Rename devm_get_gpiod_from_child()")
> >
> > interacting with commit
> >
> > d7356256488c ("serial: st-asc: (De)Register GPIOD and swap Pinctrl profiles")
> >
> > from the tty tree.
> >
> > I applied the following merge fix patch (I guessed about the new arguments):
> >
> > From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> > Date: Wed, 8 Feb 2017 15:50:22 +1100
> > Subject: [PATCH] serial: st-asc: merge fix for devm_get_gpiod_from_child rename
> >
> > Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> > ---
> > drivers/tty/serial/st-asc.c | 7 +++++--
> > 1 file changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
> > index bcf1d33e6ffe..c02e6b089364 100644
> > --- a/drivers/tty/serial/st-asc.c
> > +++ b/drivers/tty/serial/st-asc.c
> > @@ -575,8 +575,11 @@ static void asc_set_termios(struct uart_port *port, struct ktermios *termios,
> > pinctrl_select_state(ascport->pinctrl,
> > ascport->states[NO_HW_FLOWCTRL]);
> >
> > - gpiod = devm_get_gpiod_from_child(port->dev, "rts",
> > - &np->fwnode);
> > + gpiod = devm_fwnode_get_gpiod_from_child(port->dev,
> > + "rts",
> > + &np->fwnode,
> > + GPIOD_IN,
>
> GPIOD_OUT
I think it should be GPIOD_OUT_LOW ...
>
> > + np->name);
> > if (!IS_ERR(gpiod)) {
> > gpiod_direction_output(gpiod, 0);
... and you should drop this call to gpiod_direction_output().
> > ascport->rts = gpiod;
>
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