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From: Martin Habets <errandir_news@mph.eclipse.co.uk>
To: linux-ide@vger.kernel.org
Subject: Re: WIN_READ_NATIVE_MAX_EXT returns incomplete result
Date: Wed, 17 Nov 2004 15:41:27 +0000	[thread overview]
Message-ID: <20041117154126.GA16688@palantir8> (raw)
In-Reply-To: <58cb370e04111610291be130b4@mail.gmail.com>

On Tue, Nov 16, 2004 at 07:29:31PM +0100, Bartlomiej Zolnierkiewicz wrote:
> In kernel 2.6.8 LBA48 support is disabled for ALi chipsets with revisions
> <= 0xC4 (drive->addressing is set to zero) but idedisk_check_hpa()
> incorrectly uses drive->id directly which results in this bug (because
> do_rw_taskfile() and ide_end_drive_cmd() rely on drive->addressing).
> 
> This patch should fix it:

Thanks, works like a charm!

> --- ide-disk.c.orig	2004-11-05 23:24:41.000000000 +0100
> +++ ide-disk.c	2004-11-16 19:24:17.321273832 +0100
> @@ -625,7 +625,7 @@
>  static inline void idedisk_check_hpa(ide_drive_t *drive)
>  {
>  	unsigned long long capacity, set_max;
> -	int lba48 = idedisk_supports_lba48(drive->id);
> +	unsigned int lba48 = drive->addressing;
>  
>  	capacity = drive->capacity64;
>  	if (lba48)
> 
> Moreover you shouldn't hit this bug in current kernels because they
> use LBA48 (with some limitations: no DMA for LBA48 area) for ALi
> chipsets revs <= 0xC4.

Was planning to stay on 2.6.8 for a while.

-- 
Martin

      reply	other threads:[~2004-11-17 15:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-16 17:34 WIN_READ_NATIVE_MAX_EXT returns incomplete result Martin Habets
2004-11-16 18:29 ` Bartlomiej Zolnierkiewicz
2004-11-17 15:41   ` Martin Habets [this message]

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