linux-kernel - Re: [PATCH] ASoC: stm32: spdifrx: Delete unnecessary check in the probe function

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Message-ID: <20210811115846.GC4167@sirena.org.uk>
Date:   Wed, 11 Aug 2021 12:58:46 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Tang Bin <tangbin@...s.chinamobile.com>
Cc:     olivier.moysan@...s.st.com, arnaud.pouliquen@...s.st.com,
        lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.com,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Zhang Shengju <zhangshengju@...s.chinamobile.com>
Subject: Re: [PATCH] ASoC: stm32: spdifrx: Delete unnecessary check in the
 probe function

On Wed, Aug 11, 2021 at 07:55:23PM +0800, Tang Bin wrote:
> The function stm32_spdifrx_parse_of() is only called by the function
> stm32_spdifrx_probe(), and the probe function is only called with
> an openfirmware platform device. Therefore there is no need to check
> the device_node in probe function.

What is the benefit of not doing the check?  It seems like reasonable
defensive programming.

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