linux-kernel - Re: [PATCH 5/6] IP100A correct init and close step

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Date:	Mon, 21 Aug 2006 11:37:51 +0800
From:	"Jesse Huang" <jesse@...lus.com.tw>
To:	"Jeff Garzik" <jgarzik@...ox.com>
Cc:	<linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
	<akpm@...l.org>
Subject: Re: [PATCH 5/6] IP100A correct init and close step

Hi Jeff:

(3)Yes, This is a bug, I will correct it. Thanks.

(4)This will halt TxDMA and RxDMA, after that will let reseting safely.
Should I add description in source code or in change log?

Thanks!

Jesse

----- Original Message ----- 
From: "Jeff Garzik" <jgarzik@...ox.com>
To: "Jesse Huang" <jesse@...lus.com.tw>
Cc: <linux-kernel@...r.kernel.org>; <netdev@...r.kernel.org>;
<akpm@...l.org>
Sent: Friday, August 18, 2006 7:12 PM
Subject: Re: [PATCH 5/6] IP100A correct init and close step

Jesse Huang wrote:
> Hi Jeff:
> (1)Should I change to :
> spin_lock_irqsave(&np->lock,flags);
> reset_tx(dev);
> spin_lock_irqrestore(&np->lock,flags);
>
> (2)I will remove date and author information out of source code comment.

Correct.

Also:

(3) Use iowrite16(), not writew().  I just noticed this bug.
iowrite16() will work for both MMIO and IO cycles, writew() only works
for MMIO.

(4) We need a description of why this change is needed.  What does
writing 0x500 to DMACtrl actually do?  Why do we need to do this?

Jeff

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