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USB: ehci-platform: Display a DMA configuration error message

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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.

Tested-by: Huang Shijie <shijie.huang@arm.com>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeremy Linton 2015-08-19 16:36:31 -05:00 committed by Greg Kroah-Hartman
parent 39047e0702
commit 17f69b5fa6
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/host/ehci-platform.c
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@ -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 mask configuration failed\n");
return err;
}
irq = platform_get_irq(dev, 0);
if (irq < 0) {