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Message-ID: <ZypD4Uu7Xbbq7iMe@pathway.suse.cz>
Date: Tue, 5 Nov 2024 17:12:17 +0100
From: Petr Mladek <pmladek@...e.com>
To: John Ogness <john.ogness@...utronix.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
Steven Rostedt <rostedt@...dmis.org>,
Thomas Gleixner <tglx@...utronix.de>,
Esben Haabendal <esben@...nix.com>, linux-serial@...r.kernel.org,
linux-kernel@...r.kernel.org,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Rengarajan S <rengarajan.s@...rochip.com>,
Serge Semin <fancer.lancer@...il.com>,
Lino Sanfilippo <l.sanfilippo@...bus.com>
Subject: Re: [PATCH tty-next v3 2/6] serial: 8250: Use high-level write
function for FIFO
On Fri 2024-10-25 13:03:24, John Ogness wrote:
> Currently serial8250_console_fifo_write() directly writes into the
> UART_TX register, rather than using the high-level function
> serial8250_console_putchar(). This is because
> serial8250_console_putchar() waits for the holding register to
> become empty. That would defeat the purpose of the FIFO code.
>
> Move the LSR_THRE waiting to a new function
> serial8250_console_wait_putchar() so that the FIFO code can use
> serial8250_console_putchar(). This will be particularly important
> for a follow-up commit, where output bytes are inspected to track
> newlines.
>
> This is only refactoring and has no functional change.
>
> Signed-off-by: John Ogness <john.ogness@...utronix.de>
Looks good:
Reviewed-by: Petr Mladek <pmladek@...e.com>
Best Regards,
Petr
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