On Thu, May 03, 2018 at 02:13:53PM +0800, Chris Ruehl wrote:
> Hi Greg,
>
> On Friday, April 20, 2018 02:13 PM, Uwe Kleine-König wrote:
> > Hello Chris,
> >
> > On Fri, Apr 20, 2018 at 09:07:59AM +0800, Chris Ruehl wrote:
> > > Fix a problem introduced with
> > > commit e61c38d85b73 ("serial: imx: setup DCEDTE early and ensure DCD and RI irqs to be off")
> > > result in non dte-mode imx-uart fail receive data.
> > > By add back IMX21_UCR3_RXDMUXSEL the serial port works as expected.
> > >
> > > Signed-off-by: Chris Ruehl <chris.ruehl@xxxxxxxxxxxx>
> > > ---
> > > drivers/tty/serial/imx.c | 2 +-
> > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
> > > index 91f3a1a..3d09933 100644
> > > --- a/drivers/tty/serial/imx.c
> > > +++ b/drivers/tty/serial/imx.c
> > > @@ -1391,7 +1391,7 @@ static int imx_uart_startup(struct uart_port *port)
> > > ucr3 = imx_uart_readl(sport, UCR3);
> > > - ucr3 |= UCR3_DTRDEN | UCR3_RI | UCR3_DCD;
> > > + ucr3 |= IMX21_UCR3_RXDMUXSEL | UCR3_DTRDEN | UCR3_RI | UCR3_DCD;
> > > if (sport->dte_mode)
> > > /* disable broken interrupts */
> >
> > Doesn't 6df765dca378bddf994cfd2044acafa501bd800f fix this for you?
> >
> > Best regards
> > Uwe
> >
>
> The IMX serial driver is broken in the 4.9.x tree since 4.9.89.
> Uwe's patch
>
> 6df765dca378bddf994cfd2044acafa501bd800f
>
> please apply to clear the situation.
>
> I know you very busy! -
It's best to email stable@xxxxxxxxxxxxxxx for stuff like this, as I
almost missed it...
Now queued up.
greg k-h
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