linux-kernel - Re: [PATCH 03/15] tty: serial: 8250

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Message-ID: <54048720.9000003@linutronix.de>
Date:	Mon, 01 Sep 2014 16:48:00 +0200
From:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:	Frans Klaver <frans.klaver@...ns.com>
CC:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	tony@...mide.com, balbi@...com, Vinod Koul <vinod.koul@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	mika.westerberg@...ux.intel.com
Subject: Re: [PATCH 03/15] tty: serial: 8250_core: add run time pm

On 08/20/2014 11:39 AM, Frans Klaver wrote:

>>>  static int serial8250_get_poll_char(struct uart_port *port)
>>>  {
>>> -	unsigned char lsr = serial_port_in(port, UART_LSR);
>>> +	unsigned char lsr;
>>> +	int status;
>>> +
>>> +	serial8250_rpm_get(up);
>>
>> or up won't be defined below. You probably need 
> 
> Obviously I meant to say that 'up' won't be defined here.

Good catch, thanks. However I wouldn't bet my money it that won't be
defined here. The semaphore code provides up() and down() so it is
makes it kind of defined :) But it doesn't compile due to wrong pointer
types which is good (I run into this myself and looked confused at
first).
I didn't notice this at all because only kgdb uses this
CONFIG_CONSOLE_POLL which I had off. Once again, thank you.

>> +	struct uart_8250_port *up = up_to_u8250p(port);
>> somewhere in there.

Sebastian
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