Messages in this thread Patch in this message | | | From | Ben Hutchings <> | Date | Mon, 14 Nov 2016 00:14:20 +0000 | Subject | [PATCH 3.16 219/346] usb: gadget: udc: core: don't starve DMA resources |
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3.16.39-rc1 review patch. If anyone has any objections, please let me know.
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From: Felipe Balbi <felipe.balbi@linux.intel.com>
commit 23fd537c9508fb6e3b93ddf23982f51afc087781 upstream.
Always unmap all SG entries as required by DMA API
Fixes: a698908d3b3b ("usb: gadget: add generic map/unmap request utilities") Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> [bwh: Backported to 3.16: adjust filename, context] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/usb/gadget/udc-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -91,7 +91,7 @@ void usb_gadget_unmap_request(struct usb return; if (req->num_mapped_sgs) { - dma_unmap_sg(&gadget->dev, req->sg, req->num_mapped_sgs, + dma_unmap_sg(&gadget->dev, req->sg, req->num_sgs, is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); req->num_mapped_sgs = 0;
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