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From: Jeff Garzik <jgarzik@pobox.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Alan <alan@lxorguk.ukuu.org.uk>,
	torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] libata-sff: Don't call bmdma_stop on non DMA capable controllers
Date: Thu, 25 Jan 2007 11:17:20 -0500	[thread overview]
Message-ID: <45B8D810.3030501@pobox.com> (raw)
In-Reply-To: <1169741658.3593.98.camel@shinybook.infradead.org>

David Woodhouse wrote:
> On Thu, 2007-01-25 at 15:09 +0000, Alan wrote:
>> diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.20-rc4-mm1/drivers/ata/libata-sff.c linux-2.6.20-rc4-mm1/drivers/ata/libata-sff.c
>> --- linux.vanilla-2.6.20-rc4-mm1/drivers/ata/libata-sff.c       2007-01-22 16:26:50.000000000 +0000
>> +++ linux-2.6.20-rc4-mm1/drivers/ata/libata-sff.c       2007-01-24 17:31:40.000000000 +0000
>> @@ -827,7 +827,8 @@
>>   */
>>  void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc)
>>  {
>> -       ata_bmdma_stop(qc);
>> +       if (qc->ap->ioaddr.bmdma_addr)
>> +               ata_bmdma_stop(qc);
>>  }
> 
> But what if the bmdma_addr _is_ zero? Please, let's not allow the "zero
> is not a valid number" braindamage to spread any further than the IRQ
> setup it's already broken.

Read the code...  This test is already widely in use in libata.

	Jeff




  reply	other threads:[~2007-01-25 16:17 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-25 15:09 Alan
2007-01-25 16:14 ` David Woodhouse
2007-01-25 16:17   ` Jeff Garzik [this message]
2007-01-25 16:19     ` David Woodhouse
2007-01-25 16:22     ` Russell King
2007-01-25 16:26       ` David Woodhouse
2007-01-25 17:27   ` Alan
2007-01-25 17:56     ` Linus Torvalds
2007-01-26  0:23       ` David Woodhouse
2007-01-26  1:28         ` Linus Torvalds
2007-01-26  1:45           ` Jeff Garzik
2007-01-26  2:01             ` Linus Torvalds
2007-01-26  2:11               ` Jeff Garzik
2007-01-26 10:37               ` Alan
2007-01-28 23:01               ` Benjamin Herrenschmidt
2007-01-28 22:57             ` Benjamin Herrenschmidt
2007-01-26  2:23           ` David Woodhouse
2007-01-26  2:58             ` Linus Torvalds
2007-01-26  3:28               ` David Woodhouse
2007-01-26  4:00                 ` Linus Torvalds
2007-01-26  4:19                   ` David Woodhouse
2007-01-26  4:48                     ` Linus Torvalds
2007-01-26  5:09                       ` David Woodhouse
2007-01-26  6:01                         ` Linus Torvalds
2007-01-26  6:18                           ` Linus Torvalds
2007-01-26  8:17                             ` David Miller
2007-01-26  8:20                         ` David Miller
2007-01-26  4:53                 ` Jeff Garzik
2007-01-26 15:32                 ` Mark Lord
2007-01-26 15:29               ` Mark Lord
2007-01-28 23:04               ` Benjamin Herrenschmidt
2007-01-28 22:49       ` Benjamin Herrenschmidt
2007-01-25 23:36 ` Jeff Garzik

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