linux-kernel - Re: [PATCH] ata: ata_id_is

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Date:	Fri, 7 Nov 2008 22:37:46 +0800
From:	"KueiHuan Chen" <khchen@...ology.com>
To:	"Jeff Garzik" <jgarzik@...ox.com>
Cc:	"Bartlomiej Zolnierkiewicz" <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	"Alan Cox" <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] ata: ata_id_is_ssd() bugfix

I had a transcend 32GB SSD. It use ATA8 but lack of support word 217.
So this is not really work for all SSD currently...

Here is the spec of such SSD
http://www.transcend.com.tw/support/dlcenter/datasheet/SSD25S-JMI%20Datasheet%20v1.05.pdf

--
Best Regards,
KueiHuan-Chen

2008/10/28 Jeff Garzik <jgarzik@...ox.com>
>
> It seems highly unlikely that any drive that claims ATA8 would repurpose word 217, therefore upstream logic IMO should look like
>
>        if (id[ATA_ID_ROT_SPEED] == 0x01 &&
>            ((ata_id_major_version(id) >= 8) ||
>             (a list of ATA6/7 exceptions that Jens wishes to supply)))
>
> Regards,
>
>        Jeff
>
>
> --
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