linux-kernel - Re: [PATCH v4 2/3] spi: apple: Add driver for Apple SPI controller

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Message-ID: <947246c5-b9e6-43e7-a516-7b82136e6e8e@sirena.org.uk>
Date: Tue, 5 Nov 2024 13:58:36 +0000
From: Mark Brown <broonie@...nel.org>
To: Janne Grunau <j@...nau.net>
Cc: Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
	Alyssa Rosenzweig <alyssa@...enzweig.io>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, asahi@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/3] spi: apple: Add driver for Apple SPI controller

On Tue, Nov 05, 2024 at 09:08:30AM +0100, Janne Grunau wrote:
> From: Hector Martin <marcan@...can.st>
> 
> This SPI controller is present in Apple SoCs such as the M1 (t8103) and
> M1 Pro/Max (t600x). It is a relatively straightforward design with two
> 16-entry FIFOs, arbitrary transfer sizes (up to 2**32 - 1) and fully
> configurable word size up to 32 bits. It supports one hardware CS line
> which can also be driven via the pinctrl/GPIO driver instead, if
> desired. TX and RX can be independently enabled.

This breaks the build with current code:

/build/stage/linux/drivers/spi/spi-apple.c: In function ‘apple_spi_probe’:
/build/stage/linux/drivers/spi/spi-apple.c:463:16: error: implicit declaration o
f function ‘devm_spi_alloc_master’; did you mean ‘devm_spi_alloc_target’? [-Werr
or=implicit-function-declaration]
  463 |         ctlr = devm_spi_alloc_master(&pdev->dev, sizeof(struct apple_spi
));
      |                ^~~~~~~~~~~~~~~~~~~~~
      |                devm_spi_alloc_target
/build/stage/linux/drivers/spi/spi-apple.c:463:14: error: assignment to ‘struct 
spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Werror=
int-conversion]
  463 |         ctlr = devm_spi_alloc_master(&pdev->dev, sizeof(struct apple_spi
));
      |              ^
cc1: all warnings being treated as errors

It needs an update for the retirement of the old API name.

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