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Commit 4ffb4318 authored by Russell King's avatar Russell King
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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: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent e0a8ba25
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+6 −0
Original line number Original line Diff line number Diff line
@@ -185,6 +185,12 @@ static int ohci_hcd_sa1111_probe(struct sa1111_dev *dev)
	if (usb_disabled())
	if (usb_disabled())
		return -ENODEV;
		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");
	hcd = usb_create_hcd(&ohci_sa1111_hc_driver, &dev->dev, "sa1111");
	if (!hcd)
	if (!hcd)
		return -ENOMEM;
		return -ENOMEM;