[PATCH 4.7 125/143] usb: gadget: udc: core: dont starve DMA resources
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2016-09-05 17:07:08
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4.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Felipe Balbi <redacted>
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 <redacted>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/udc-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c@@ -106,7 +106,7 @@ void usb_gadget_unmap_request_by_dev(str return; if (req->num_mapped_sgs) { - dma_unmap_sg(dev, req->sg, req->num_mapped_sgs, + dma_unmap_sg(dev, req->sg, req->num_sgs, is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE); req->num_mapped_sgs = 0;