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usb: wire adapter: add scatter gather support

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This patch adds support for scatter gather DMA to the wire adapter and
updates the HWA to advertise support for SG transfers.  This allows the
block layer to submit transfer requests to the HWA HC without first
breaking them up into PAGE_SIZE requests.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Pugliese
2013-06-11 10:39:31 -05:00
committed by Greg Kroah-Hartman
parent 5b92f46c96
commit 2b81c083c6
2 changed files with 167 additions and 15 deletions
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1
drivers/usb/host/hwa-hc.c
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@@ -774,6 +774,7 @@ static int hwahc_probe(struct usb_interface *usb_iface,
goto error_alloc;
}
usb_hcd->wireless = 1;
usb_hcd->self.sg_tablesize = ~0;
wusbhc = usb_hcd_to_wusbhc(usb_hcd);
hwahc = container_of(wusbhc, struct hwahc, wusbhc);
hwahc_init(hwahc);