linux-kernel - Re: [PATCH v1 1/1] spi: Assume GPIO CS active high in ACPI case

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 11 May 2021 12:13:30 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Liguang Zhang <zhangliguang@...ux.alibaba.com>,
        Jay Fang <f.fangjian@...wei.com>,
        Sven Van Asbroeck <thesven73@...il.com>,
        Xin Hao <xhao@...ux.alibaba.com>
Subject: Re: [PATCH v1 1/1] spi: Assume GPIO CS active high in ACPI case

On Mon, May 10, 2021 at 05:10:22PM +0300, Andy Shevchenko wrote:

> +			bool value = has_acpi_companion(&spi->dev) ? !enable : activate;

Please write normal conditional statements to improve legibility.

>  			if (spi->cs_gpiod)
> -				/* polarity handled by gpiolib */
> -				gpiod_set_value_cansleep(spi->cs_gpiod, activate);
> +				/* Polarity handled by GPIO library */
> +				gpiod_set_value_cansleep(spi->cs_gpiod, value);
>  			else
>  				/*
> -				 * invert the enable line, as active low is
> +				 * Invert the enable line, as active low is
>  				 * default for SPI.

The change would be clearer with the documentation formatting changes
split out from the rest of it.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)