linux-kernel - Re: [PATCH 3/3] ahci: st: st_configure_oob must be called after IP is clocked.

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Message-ID: <20150401160744.GR9974@htj.duckdns.org>
Date:	Wed, 1 Apr 2015 12:07:44 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Peter Griffin <peter.griffin@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	maxime.coquelin@...com, patrice.chotard@...com,
	srinivas.kandagatla@...il.com, lee.jones@...aro.org,
	devicetree@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: [PATCH 3/3] ahci: st: st_configure_oob must be called after IP
 is clocked.

On Tue, Mar 31, 2015 at 08:35:09AM +0100, Peter Griffin wrote:
> Currently the ahci_st driver will hang the system on probe, as the
> st_configure_oob function does some register writes before the IP
> is clocked. This patch moves the function call to after
> ahci_platform_enable_resources (which enables the IP clock), and
> resolves the hang.
> 
> Addtionally st_ahci_configure_oob should be called in the st_ahci_resume
> function, so we also rectify that ensuring it is also called after
> the IP clock has been enabled.
> 
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
> Acked-by: Lee Jones <lee.jones@...aro.org>
> Acked-by: Maxime Coquelin <maxime.coquelin@...com>

Applied 1, 3 to libata/for-4.1.

Thanks.

-- 
tejun
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