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@xxxxxxx>
Reviewed-by: Graeme Gregory <graeme.gregory@xxxxxxxxxx>
Reviewed-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx>
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jeremy Linton <jeremy.linton@xxxxxxx>
---
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..3ce38c3 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 mask configuration failed\n");
return err;
+ }
irq = platform_get_irq(dev, 0);
if (irq < 0) {
--
2.4.3
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