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usb: gadget: udc: core: don't starve DMA resources

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commit 23fd537c9508fb6e3b93ddf23982f51afc087781 upstream.

Always unmap all SG entries as required by DMA API

Fixes: a698908d3b3b ("usb: gadget: add generic map/unmap request utilities")
Cc: <stable@vger.kernel.org> # v3.4+
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felipe Balbi 2016-08-24 14:33:27 +03:00 committed by Greg Kroah-Hartman
parent 2a5cb80e3e
commit 982c4970fd
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/udc/udc-core.c
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@ -97,7 +97,7 @@ void usb_gadget_unmap_request(struct usb_gadget *gadget,
return;
if (req->num_mapped_sgs) {
dma_unmap_sg(gadget->dev.parent, req->sg, req->num_mapped_sgs,
dma_unmap_sg(gadget->dev.parent, req->sg, req->num_sgs,
is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
req->num_mapped_sgs = 0;