linux-kernel - Re: [PATCH 15/37] sparc,sunzilog: Add console polling support for sunzilog serial driver

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Date:	Wed, 23 Dec 2009 14:00:46 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jason.wessel@...driver.com
Cc:	linux-kernel@...r.kernel.org, kgdb-bugreport@...ts.sourceforge.net,
	kdb@....sgi.com, mingo@...e.hu
Subject: Re: [PATCH 15/37] sparc,sunzilog: Add console polling support for
 sunzilog serial driver

From: Jason Wessel <jason.wessel@...driver.com>
Date: Wed, 23 Dec 2009 15:54:53 -0600

> David Miller wrote:
>> From: Jason Wessel <jason.wessel@...driver.com>
>> Date: Wed, 23 Dec 2009 15:19:28 -0600
>>
>>   
>>> +static void sunzilog_put_poll_char(struct uart_port *port,
>>> +			unsigned char ch)
>>> +{
>>> +	struct uart_sunzilog_port *up = (struct uart_sunzilog_port *)port;
>>> +
>>> +	sunzilog_putchar(&up->port, ch);
>>> +	udelay(2);
>>> +
>>> +}
>>> +#endif /* CONFIG_CONSOLE_POLL */
>>>     
>>
>> Just curious, what is the udelay() for?
>>   
> 
> This was copied from zm.c driver.  I don't think the HW needs it, I'll
> retest and purge it.
 ...
> Consider it done.

Thanks.
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