linux-kernel - RE: [PATCH V2 1/5] tty: serial: fsl_lpuart: only enable Idle Line Interrupt for non-dma case

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Date:   Wed, 23 Nov 2022 10:28:01 +0000
From:   Sherry Sun <sherry.sun@....com>
To:     Greg KH <gregkh@...uxfoundation.org>
CC:     "jirislaby@...nel.org" <jirislaby@...nel.org>,
        "michael@...le.cc" <michael@...le.cc>,
        "jingchang.lu@...escale.com" <jingchang.lu@...escale.com>,
        "tomonori.sakita@...d.co.jp" <tomonori.sakita@...d.co.jp>,
        "atsushi.nemoto@...d.co.jp" <atsushi.nemoto@...d.co.jp>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH V2 1/5] tty: serial: fsl_lpuart: only enable Idle Line
 Interrupt for non-dma case



> -----Original Message-----
> From: Greg KH <gregkh@...uxfoundation.org>
> Sent: 2022年11月23日 0:56
> To: Sherry Sun <sherry.sun@....com>
> Cc: jirislaby@...nel.org; michael@...le.cc; jingchang.lu@...escale.com;
> tomonori.sakita@...d.co.jp; atsushi.nemoto@...d.co.jp; linux-
> serial@...r.kernel.org; linux-kernel@...r.kernel.org; dl-linux-imx <linux-
> imx@....com>
> Subject: Re: [PATCH V2 1/5] tty: serial: fsl_lpuart: only enable Idle Line
> Interrupt for non-dma case
> 
> On Thu, Nov 10, 2022 at 04:17:24PM +0800, Sherry Sun wrote:
> > For the lpuart driver, the Idle Line Interrupt Enable now is only
> > needed for the CPU mode, so enable the UARTCTRL_ILIE at the correct
> > place, and clear it when shutdown.
> >
> > Also need to configure the suitable UARTCTRL_IDLECFG, now the value is
> > 0x7, represent 128 idle characters will trigger the Idle Line Interrupt.
> >
> > Signed-off-by: Sherry Sun <sherry.sun@....com>
> > ---
> > Changes in V2:
> > 1. Use FIELD_PREP() and GENMASK() for easy access to UARTCTRL_IDLECFG
> > fields as suggested by Ilpo.
> > ---
> >  drivers/tty/serial/fsl_lpuart.c | 11 ++++++-----
> >  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> This commit breaks the build for me as FIELD_PREP() does not seem to be
> included properly :(
> 
> Please fix up and resend.

Hi Greg,

It is strange that the build is pass at my side. But anyway, I will include the corresponding head files for FIELD_PREP/GENMASK and resend it.
Sorry for the inconvenience.

Best Regards
Sherry