From: Jeff Garzik <jgarzik@pobox.com>
To: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: linux-ide@vger.kernel.org, stable@kernel.org
Subject: Re: [PATCH resend] pata_hpt3x2n: fix clock turnaround
Date: Thu, 17 Dec 2009 01:13:12 -0500 [thread overview]
Message-ID: <4B29CBF8.1070709@pobox.com> (raw)
In-Reply-To: <200912071652.57615.sshtylyov@ru.mvista.com>
On 12/07/2009 08:52 AM, Sergei Shtylyov wrote:
> The clock turnaround code still doesn't work for several reasons:
>
> - 'USE_DPLL' flag in 'ap->host->private_data' is never initialized or updated,
> so the driver can only set the chip to the DPLL clock mode, not the PCI mode;
>
> - the driver doesn't serialize access to the channels depending on the current
> clock mode like the vendor drivers, so the clock turnaround is only executed
> "optionally", not always as it should be;
>
> - the wrong ports are written to when hpt3x2n_set_clock() is called for the
> secondary channel;
>
> - hpt3x2n_set_clock() can inadvertently enable the disabled channels when
> resetting the channel state machines.
>
> Signed-off-by: Sergei Shtylyov<sshtylyov@ru.mvista.com>
> Cc:stable@kernel.org
applied, after fixing this newly-appearing niggle:
drivers/ata/pata_hpt3x2n.c: In function ‘hpt3x2n_qc_issue’:
drivers/ata/pata_hpt3x2n.c:327: warning: cast to pointer from integer of
different size
prev parent reply other threads:[~2009-12-17 6:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-07 13:52 [PATCH resend] pata_hpt3x2n: fix clock turnaround Sergei Shtylyov
2009-12-07 19:29 ` Jeff Garzik
2009-12-17 6:13 ` Jeff Garzik [this message]
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