[PATCH] riscv/console: Updated the console-config.c file

somesh deshmukh someshdeshmukh07 at gmail.com
Fri Apr 30 03:44:05 UTC 2021


On Thu, Apr 29, 2021 at 10:59 PM Hesham Almatary <
hesham.almatary at cl.cam.ac.uk> wrote:

> On Wed, 28 Apr 2021 at 15:23, Somesh Deshmukh
> <someshdeshmukh07 at gmail.com> wrote:
> >
> > - Parsing the sub-node should be available generic not specific to
> Freedom
> >   Arty310 board. If we remove the Freedom Arty macro now, it will lose
> >   backward compatibility.The proposed change will retain the backward
> >   compatibility and also adds the necessary fix for parsing sub-node.
> >
> > - Line 234 and 235 in riscv_console_probe() uses polled handlers for
> ns16550
> >   read and write while, the console_initialize function uses ns16550
> >   interrupt handler. Proposing a fix to make polled handlers consistant
> >   through out the console-config.c
> > ---
> >  bsps/riscv/riscv/console/console-config.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/bsps/riscv/riscv/console/console-config.c
> b/bsps/riscv/riscv/console/console-config.c
> > index d962a5a418..f203f0be7d 100644
> > --- a/bsps/riscv/riscv/console/console-config.c
> > +++ b/bsps/riscv/riscv/console/console-config.c
> > @@ -91,7 +91,7 @@ static int riscv_get_console_node(const void *fdt)
> >      stdout_path = "";
> >    }
> >
> > -#if RISCV_ENABLE_FRDME310ARTY_SUPPORT != 0
> > +#if ((RISCV_ENABLE_FRDME310ARTY_SUPPORT != 0) ||
> (RISCV_CONSOLE_MAX_NS16550_DEVICES > 0))
> >    int root;
> >    int soc;
> >    root = fdt_path_offset(fdt, "/");
> > @@ -318,7 +318,7 @@ rtems_status_code console_initialize(
> >
> >      rtems_termios_device_install(
> >        path,
> > -      &ns16550_handler_interrupt,
> > +      &ns16550_handler_polled,
> I would leave the driver interrupt-based as it is. Other than that the
> patch is fine by me.
>
> Thanks Hesham for the review.
One question though, is there any specific reason to use the
ns16550_handler_interrupt?

>        NULL,

>        &ctx->base
> >      );
> > --
> > 2.25.1
> >
> > _______________________________________________
> > devel mailing list
> > devel at rtems.org
> > http://lists.rtems.org/mailman/listinfo/devel
>
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