linux-kernel - Re: [PATCH] soundwire: stream: Fix test for DP prepare complete

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Message-ID: <YM8jz8/kzMNg9xBB@vkoul-mobl>
Date:   Sun, 20 Jun 2021 16:47:35 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Richard Fitzgerald <rf@...nsource.cirrus.com>
Cc:     yung-chuan.liao@...ux.intel.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        patches@...nsource.cirrus.com
Subject: Re: [PATCH] soundwire: stream: Fix test for DP prepare complete

On 18-06-21, 15:47, Richard Fitzgerald wrote:
> In sdw_prep_deprep_slave_ports(), after the wait_for_completion()
> the DP prepare status register is read. If this indicates that the
> port is now prepared, the code should continue with the port setup.
> It is irrelevant whether the wait_for_completion() timed out if the
> port is now ready.
> 
> The previous implementation would always fail if the
> wait_for_completion() timed out, even if the port was reporting
> successful prepare.
> 
> This patch also fixes a minor bug where the return from sdw_read()
> was not checked for error - any error code with LSBits clear could
> be misinterpreted as a successful port prepare.

Applied, thanks

-- 
~Vinod