linux-kernel - Re: [PATCH] clk: lan966x: Depend on CONFIG

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Message-ID: <e2a5b8f1-2117-c1be-9223-91904de885d5@kot-begemot.co.uk>
Date:   Thu, 24 Feb 2022 08:03:15 +0000
From:   Anton Ivanov <anton.ivanov@...-begemot.co.uk>
To:     David Gow <davidgow@...gle.com>, Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>
Cc:     linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-um@...ts.infradead.org
Subject: Re: [PATCH] clk: lan966x: Depend on CONFIG_IOMEM



On 24/02/2022 03:59, David Gow wrote:
> The lan966x clk driver depends on IOMEM functions, in particular
> devm_platform_ioremap_resource(), but doesn't state a formal dependency
> on it in Kconfig.
> 
> Add such a dependency, which prevents this driver from being enabled
> on UML configurations without IOMEM.
> 
> This fixes the following build failure:
> 
> /usr/bin/ld: drivers/clk/clk-lan966x.o: in function `lan966x_clk_probe':
> clk-lan966x.c:(.text+0x294): undefined reference to `devm_platform_ioremap_resource'
> /usr/bin/ld: clk-lan966x.c:(.text+0x3aa): undefined reference to `devm_ioremap_resource'
> collect2: error: ld returned 1 exit status
> 
> Signed-off-by: David Gow <davidgow@...gle.com>
> ---
>   drivers/clk/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index 3cdf33470a75..7b5db8a9eb4f 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -231,6 +231,7 @@ config COMMON_CLK_GEMINI
>   
>   config COMMON_CLK_LAN966X
>   	bool "Generic Clock Controller driver for LAN966X SoC"
> +	depends on IOMEM
>   	help
>   	  This driver provides support for Generic Clock Controller(GCK) on
>   	  LAN966X SoC. GCK generates and supplies clock to various peripherals
> 

Acked-By: anton ivanov <anton.ivanov@...bridgegreys.com>

-- 
Anton R. Ivanov
https://www.kot-begemot.co.uk/