linux-kernel - Re: [PATCH] dmaengine: qcom_hidma: hide MSI handler when unused

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Date:   Tue, 8 Nov 2016 09:42:52 -0500
From:   Sinan Kaya <okaya@...eaurora.org>
To:     Arnd Bergmann <arnd@...db.de>, Vinod Koul <vinod.koul@...el.com>
Cc:     Dan Williams <dan.j.williams@...el.com>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dmaengine: qcom_hidma: hide MSI handler when unused

On 11/8/2016 8:48 AM, Arnd Bergmann wrote:
> The newly added MSI support causes a harmless warning when MSI
> is disabled:
> 
> drivers/dma/qcom/hidma.c:558:20: error: 'hidma_chirq_handler_msi' defined but not used [-Werror=unused-function]
> 
> This adds another #ifdef to match that around the users of the function.
> 
> Fixes: 1c0e3e82a7fb ("dmaengine: qcom_hidma: add MSI support for interrupts")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Thanks for the clean up.

Acked-by: Sinan Kaya <okaya@...eaurora.org>

> ---
>  drivers/dma/qcom/hidma.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/dma/qcom/hidma.c b/drivers/dma/qcom/hidma.c
> index d5e7991ad737..10425e134e06 100644
> --- a/drivers/dma/qcom/hidma.c
> +++ b/drivers/dma/qcom/hidma.c
> @@ -555,6 +555,7 @@ static irqreturn_t hidma_chirq_handler(int chirq, void *arg)
>  	return hidma_ll_inthandler(chirq, lldev);
>  }
>  
> +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
>  static irqreturn_t hidma_chirq_handler_msi(int chirq, void *arg)
>  {
>  	struct hidma_lldev **lldevp = arg;
> @@ -563,6 +564,7 @@ static irqreturn_t hidma_chirq_handler_msi(int chirq, void *arg)
>  	return hidma_ll_inthandler_msi(chirq, *lldevp,
>  				       1 << (chirq - dmadev->msi_virqbase));
>  }
> +#endif
>  
>  static ssize_t hidma_show_values(struct device *dev,
>  				 struct device_attribute *attr, char *buf)
> 


-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.