linux-kernel - Re: [PATCH v2 01/15] spi: Remove unneeded OF node NULL checks

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Date:   Tue, 11 Jul 2023 10:12:55 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        Amit Kumar Mahapatra via Alsa-devel 
        <alsa-devel@...a-project.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Tharun Kumar P <tharunkumar.pasumarthi@...rochip.com>,
        Vijaya Krishna Nivarthi <quic_vnivarth@...cinc.com>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        linux-riscv@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-trace-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:     Sanjay R Mehta <sanju.mehta@....com>,
        Radu Pirea <radu_nicolae.pirea@....ro>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Tudor Ambarus <tudor.ambarus@...aro.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
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        Alain Volmat <alain.volmat@...s.st.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Max Filippov <jcmvbkbc@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Richard Cochran <richardcochran@...il.com>
Subject: Re: [PATCH v2 01/15] spi: Remove unneeded OF node NULL checks

Il 10/07/23 17:49, Andy Shevchenko ha scritto:
> In the couple of places the NULL check of OF node is implied by the call
> that takes it as a parameter. Drop the respective duplicate checks.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Validated against spi-mt65xx, spi-mt7621, spi-mtk-nor, spi-mtk-snfi;

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com> # 
MediaTek

> ---
>   drivers/spi/spi.c | 5 +----
>   1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
> index 9291b2a0e887..8f3282a71c63 100644
> --- a/drivers/spi/spi.c
> +++ b/drivers/spi/spi.c
> @@ -2399,9 +2399,6 @@ static void of_register_spi_devices(struct spi_controller *ctlr)
>   	struct spi_device *spi;
>   	struct device_node *nc;
>   
> -	if (!ctlr->dev.of_node)
> -		return;
> -
>   	for_each_available_child_of_node(ctlr->dev.of_node, nc) {
>   		if (of_node_test_and_set_flag(nc, OF_POPULATED))
>   			continue;
> @@ -3134,7 +3131,7 @@ int spi_register_controller(struct spi_controller *ctlr)
>   		if (WARN(id < 0, "couldn't get idr"))
>   			return id == -ENOSPC ? -EBUSY : id;
>   		ctlr->bus_num = id;
> -	} else if (ctlr->dev.of_node) {
> +	} else {
>   		/* Allocate dynamic bus number using Linux idr */
>   		id = of_alias_get_id(ctlr->dev.of_node, "spi");
>   		if (id >= 0) {