linux-kernel - Re: [PATCH v1 2/3] spidev: Switch to use spi_get

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]

Message-ID: <dbbaf3b7ece33061d4aeebd48b49a721132d3e0b.camel@siemens.com>
Date:   Fri, 25 Aug 2023 07:17:37 +0000
From:   "Sverdlin, Alexander" <alexander.sverdlin@...mens.com>
To:     "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "andriy.shevchenko@...ux.intel.com" 
        <andriy.shevchenko@...ux.intel.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 2/3] spidev: Switch to use spi_get_csgpiod()

Hi!

On Thu, 2023-08-24 at 19:22 +0300, Andy Shevchenko wrote:
> spidev_ioctl() checks if there is an SPI chip select is driven by GPIO.
                                                     ^^^ ?

> Instead of current code, we can call spi_get_csgpiod().
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Reviewed-by: Alexander Sverdlin <alexander.sverdlin@...mens.com>

> ---
>  drivers/spi/spidev.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
> index dc516f0ca71f..e324b42c658c 100644
> --- a/drivers/spi/spidev.c
> +++ b/drivers/spi/spidev.c
> @@ -393,8 +393,7 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
>         case SPI_IOC_RD_MODE32:
>                 tmp = spi->mode;
>  
> -               if (ctlr->use_gpio_descriptors && ctlr->cs_gpiods &&
> -                   ctlr->cs_gpiods[spi_get_chipselect(spi, 0)])
> +               if (ctlr->use_gpio_descriptors && spi_get_csgpiod(spi, 0))
>                         tmp &= ~SPI_CS_HIGH;
>  
>                 if (cmd == SPI_IOC_RD_MODE)
> @@ -430,8 +429,7 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
>                                 break;
>                         }
>  
> -                       if (ctlr->use_gpio_descriptors && ctlr->cs_gpiods &&
> -                           ctlr->cs_gpiods[spi_get_chipselect(spi, 0)])
> +                       if (ctlr->use_gpio_descriptors && spi_get_csgpiod(spi, 0))
>                                 tmp |= SPI_CS_HIGH;
>  
>                         tmp |= spi->mode & ~SPI_MODE_MASK;

-- 
Alexander Sverdlin
Siemens AG
www.siemens.com