blob: ce54f180db563af65b352c6a1ae35abff0eac4b8 [file] [log] [blame]
From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Wed, 24 Aug 2016 14:33:27 +0300
Subject: usb: gadget: udc: core: don't starve DMA resources
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;