Subject: [PATCH 2/3] Display a DMA error message

From: [email-masked] (Hanjun Guo)
Date: Thu, 13 Aug 2015 19:02:17 +0800

On 2015/8/13 5:51, Jeremy Linton wrote:
> If the ehci driver fails to configure the dma settings then display
> a dev error instead of simply failing. This is triggered in an
> ACPI world if the user fails to set the _CCA on the device.
>
> Signed-off-by: Jeremy Linton <[email-masked]>
> ---
>  drivers/usb/host/ehci-platform.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
> index 2593def..82e396f 100644
> --- a/drivers/usb/host/ehci-platform.c
> +++ b/drivers/usb/host/ehci-platform.c
> @@ -162,8 +162,10 @@ static int ehci_platform_probe(struct platform_device *dev)
>  
>  	err = dma_coerce_mask_and_coherent(&dev->dev,
>  		pdata->dma_mask_64 ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
> -	if (err)
> +	if (err) {
> +		dev_err(&dev->dev, "Error: DMA setup failed\n");
>  		return err;
> +	}
>  
>  	irq = platform_get_irq(dev, 0);
>  	if (irq < 0) {

Reviewed-by: Hanjun Guo <[email-masked]>

Thanks
Hanjun