From: Russell King Date: Thu, 27 Jun 2013 10:10:40 +0000 (+0100) Subject: DMA-API: usb: ohci-sa1111: add a note about DMA masks X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4ffb4318b044d175709567402a65f8ebb19f5d3b;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git DMA-API: usb: ohci-sa1111: add a note about DMA masks Add a comment to explain why this driver doesn't call any of the DMA API dma_set_mask() functions. Signed-off-by: Russell King --- diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index 17b2a7dad77b..aa9e127bbe71 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -185,6 +185,12 @@ static int ohci_hcd_sa1111_probe(struct sa1111_dev *dev) if (usb_disabled()) return -ENODEV; + /* + * We don't call dma_set_mask_and_coherent() here because the + * DMA mask has already been appropraitely setup by the core + * SA-1111 bus code (which includes bug workarounds.) + */ + hcd = usb_create_hcd(&ohci_sa1111_hc_driver, &dev->dev, "sa1111"); if (!hcd) return -ENOMEM;