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Re: [PATCH] ide: Add tx4939ide driver (v3)

To: Atsushi Nemoto <>
Subject: Re: [PATCH] ide: Add tx4939ide driver (v3)
From: Sergei Shtylyov <>
Date: Thu, 16 Oct 2008 21:23:07 +0400
In-reply-to: <>
Organization: MontaVista Software Inc.
Original-recipient: rfc822;
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Atsushi Nemoto wrote:

This is the driver for the Toshiba TX4939 SoC ATA controller.

  Mostly ACK but there's still a few minor nits...

Welcome back!

   Indeed, it turned out to be hard to drown in the Dead see. :-)

 I will address all of your points except for followings.

+                       xcount = bcount & 0xffff;
+                       if (xcount == 0x0000) {

Hm, I'm not sure this is necessary here... although I didn't see an explicit mention that zero count means 64 KB in the datasheet -- which it must mean if the BMIDE spec. was followed).
In ide-dma.c this check was added because of CS5530's brain damage...

Hmm, if I could test this case easily I will drop this.  Otherwise I
will keep it as is for future investigation.


+       if ((dma_stat & 7) == 0 &&
+           (ctl & (TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST)) ==
+           (TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST))

  Parens around & and | are hardly needed...

You mean more parens are needed?

   I mean less. :-)

Atsushi Nemoto

MBR, Sergei

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