linux-kernel - Re: [PATCH v2 15/15] mmc: host: sdhci-iproc: Do not define 'struct acpi_device_id' when !CONFIG

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Message-ID: <78030915-d7a4-d0f1-3ab8-f6e5c8bb59cf@broadcom.com>
Date:   Tue, 7 Jul 2020 08:47:21 -0700
From:   Scott Branden <scott.branden@...adcom.com>
To:     Lee Jones <lee.jones@...aro.org>, ulf.hansson@...aro.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH v2 15/15] mmc: host: sdhci-iproc: Do not define 'struct
 acpi_device_id' when !CONFIG_ACPI

thanks

On 2020-07-06 11:47 p.m., Lee Jones wrote:
> Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI,
> 'struct sdhci_iproc_acpi_ids' becomes defined but unused.
>
> Fixes the following W=1 kernel build warning:
>
>   mmc/host/sdhci-iproc.c:297:36: warning: ‘sdhci_iproc_acpi_ids’ defined but not used [-Wunused-const-variable=]
>
> Cc: Adrian Hunter <adrian.hunter@...el.com>
> Cc: Ray Jui <rjui@...adcom.com>
> Cc: Scott Branden <sbranden@...adcom.com>
> Cc: bcm-kernel-feedback-list@...adcom.com
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
Acked-by: Scott Branden <scott.branden@...adcom.com>
>
> diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
> index 225603148d7de..e2d8dfe90077e 100644
> --- a/drivers/mmc/host/sdhci-iproc.c
> +++ b/drivers/mmc/host/sdhci-iproc.c
> @@ -294,12 +294,14 @@ static const struct of_device_id sdhci_iproc_of_match[] = {
>   };
>   MODULE_DEVICE_TABLE(of, sdhci_iproc_of_match);
>   
> +#ifdef CONFIG_ACPI
>   static const struct acpi_device_id sdhci_iproc_acpi_ids[] = {
>          { .id = "BRCM5871", .driver_data = (kernel_ulong_t)&iproc_cygnus_data },
>          { .id = "BRCM5872", .driver_data = (kernel_ulong_t)&iproc_data },
>          { /* sentinel */ }
>   };
>   MODULE_DEVICE_TABLE(acpi, sdhci_iproc_acpi_ids);
> +#endif
>   
>   static int sdhci_iproc_probe(struct platform_device *pdev)
>   {