From edfbcb321faf07ca970e4191abe061deeb7d3788 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 11 Aug 2019 10:05:16 +0200 Subject: usb: add a hcd_uses_dma helper The USB buffer allocation code is the only place in the usb core (and in fact the whole kernel) that uses is_device_dma_capable, while the URB mapping code uses the uses_dma flag in struct usb_bus. Switch the buffer allocation to use the uses_dma flag used by the rest of the USB code, and create a helper in hcd.h that checks this flag as well as the CONFIG_HAS_DMA to simplify the caller a bit. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20190811080520.21712-3-hch@lst.de Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc2/hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/usb/dwc2/hcd.c') diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index ee144ff8af5b..111787a137ee 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -4608,7 +4608,7 @@ static int _dwc2_hcd_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, buf = urb->transfer_buffer; - if (hcd->self.uses_dma) { + if (hcd_uses_dma(hcd)) { if (!buf && (urb->transfer_dma & 3)) { dev_err(hsotg->dev, "%s: unaligned transfer with no transfer_buffer", -- cgit v1.2.1