linux-kernel - Re: [PATCH v4 10/10] tty: serial: use uart_port_tx

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Message-ID: <bb3fa609-858f-ab16-95b4-06fd43ec6129@kernel.org>
Date:   Tue, 20 Sep 2022 12:58:04 +0200
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-serial <linux-serial@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Pali Rohár <pali@...nel.org>,
        Kevin Cernekee <cernekee@...il.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Patrice Chotard <patrice.chotard@...s.st.com>,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v4 10/10] tty: serial: use uart_port_tx_limited()

On 20. 09. 22, 11:19, Ilpo Järvinen wrote:
> One improvement suggestion below.
> 
>> diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c
>> index 23f339757894..f224f5141726 100644
>> --- a/drivers/tty/serial/altera_jtaguart.c
>> +++ b/drivers/tty/serial/altera_jtaguart.c
>> @@ -137,39 +137,17 @@ static void altera_jtaguart_rx_chars(struct altera_jtaguart *pp)
>>   static void altera_jtaguart_tx_chars(struct altera_jtaguart *pp)
...
>> +	space = readl(port->membase + ALTERA_JTAGUART_CONTROL_REG);
>> +	space &= ALTERA_JTAGUART_CONTROL_WSPACE_MSK;
>> +	space >>= ALTERA_JTAGUART_CONTROL_WSPACE_OFF;
> 
> This is FIELD_GET(ALTERA_JTAGUART_CONTROL_WSPACE_MSK, ...) & then allows
> killing ALTERA_JTAGUART_CONTROL_WSPACE_OFF. I'd probably do it in a
> separate patch though.

Right. Prepared for v5.

thanks,
-- 
js
suse labs