linux-kernel - Re: [Nios2-dev] [PATHV v2] tty: serial: altera

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Date:	Fri, 18 Feb 2011 09:28:38 +0800
From:	Thomas Chou <thomas@...ron.com.tw>
To:	Tobias Klauser <tklauser@...tanz.ch>
CC:	nios2-dev@...c.et.ntust.edu.tw,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-serial@...r.kernel.org,
	Grant Likely <grant.likely@...retlab.ca>,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [Nios2-dev] [PATHV v2] tty: serial: altera_uart: Add  devicetree
 support

On 02/17/2011 03:48 PM, Tobias Klauser wrote:
>>> +	ret = altera_uart_get_of_uartclk(pdev, port);
>>> +	if (ret&&   platp)
>>> +		port->uartclk = platp->uartclk;
>>> +	else if (ret)
>>> +		return ret;
>>> +
>>
>> Better reverse the priority, with platform data checked first.
>>
>> 	if (platp)
>> 		port->uartclk = platp->uartclk;
>> 	else {
>> 		ret = altera_uart_get_of_uartclk(pdev, port);
>> 		if (ret)
>> 			return ret;
>> 	}
>
> Do you have a specific reasoning for this? I thought it might make sense
> to do it in the same order as with the resources above, but I have no
> problem changing it to the way you suggest.

Not quite sure. But I see some drivers follow this order, and I just 
followed, too.

- Thomas
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