linux-kernel - Re: [PATCH] Input: Apple SPI keyboard needs CRC16

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Message-ID: <20190723134235.GA845@penguin>
Date:   Tue, 23 Jul 2019 16:42:35 +0300
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Ronald Tschalär <ronald@...ovation.ch>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: Apple SPI keyboard needs CRC16

On Tue, Jul 23, 2019 at 01:58:45PM +0200, Arnd Bergmann wrote:
> In some rare randconfig builds, CRC16 is disabled, which leads
> to a link error:
> 
> drivers/input/keyboard/applespi.o: In function `applespi_send_cmd_msg':
> applespi.c:(.text+0x449f): undefined reference to `crc16'
> drivers/input/keyboard/applespi.o: In function `applespi_verify_crc':
> applespi.c:(.text+0x7538): undefined reference to `crc16'
> 
> This symbol is meant to be selected for each user in Kconfig,
> so do that here as well.
> 
> Fixes: 038b1a05eae6 ("Input: add Apple SPI keyboard and trackpad driver")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied, thank you.

> ---
>  drivers/input/keyboard/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
> index 8e9c3ea9d5e7..ebb19e21473e 100644
> --- a/drivers/input/keyboard/Kconfig
> +++ b/drivers/input/keyboard/Kconfig
> @@ -76,6 +76,7 @@ config KEYBOARD_APPLESPI
>  	depends on ACPI && EFI
>  	depends on SPI
>  	depends on X86 || COMPILE_TEST
> +	select CRC16
>  	help
>  	  Say Y here if you are running Linux on any Apple MacBook8,1 or later,
>  	  or any MacBookPro13,* or MacBookPro14,*.
> -- 
> 2.20.0
> 

-- 
Dmitry