From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 49151] NULL pointer dereference in pata_acpi
Date: Sat,  3 Nov 2012 04:26:40 +0000 (UTC)
Message-ID: <20121103042640.4003A11FB83@bugzilla.kernel.org>
References: <bug-49151-11633@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=49151





--- Comment #33 from Borislav Petkov <bp@alien8.de>  2012-11-03 04:26:39 ---
On Wed, Oct 24, 2012 at 11:57:46AM +0100, Alan Cox wrote:
> Which is an ATA layer bug - adev->dma_mode should never be called
> without a DMA mode in normal use.

Ok, it looks like this would take a while to fix.

Alan, what is your suggestion for a proper fix, uncomment XFER_PIO_SLOW
and drop to it with a big warning that ACPI is giving botched
information on those chips and people should try using the
platform-specific driver if they want better/optimal speeds?

Thanks.

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