Patch "usb: gadget: udc: core: don't starve DMA resources" has been added to the 4.7-stable tree

Patch "usb: gadget: udc: core: don't starve DMA resources" has been added to the 4.7-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 4.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     usb-gadget-udc-core-don-t-starve-dma-resources.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 23fd537c9508fb6e3b93ddf23982f51afc087781 Mon Sep 17 00:00:00 2001
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

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>
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;


Patches currently in stable-queue which might be from felipe.balbi@linux.intel.com are

queue-4.7/usb-dwc3-pci-add-intel-kabylake-pci-id.patch
queue-4.7/usb-misc-usbtest-usbtest_do_ioctl-may-return-positive-integer.patch
queue-4.7/usb-renesas_usbhs-fix-receiving-data-corrupt-on-r-car-gen3-with-dmac.patch
queue-4.7/usb-renesas_usbhs-clear-the-brdysts-in-usbhsg_ep_enable.patch
queue-4.7/usb-gadget-fix-gadgetfs-aio-support.patch
queue-4.7/usb-dwc3-gadget-always-cleanup-all-trbs.patch
queue-4.7/usb-renesas_usbhs-use-dmac-only-if-the-pipe-type-is-bulk.patch
queue-4.7/usb-gadget-fsl_qe_udc-off-by-one-in-setup_received_handle.patch
queue-4.7/usb-gadget-udc-core-don-t-starve-dma-resources.patch
queue-4.7/usb-dwc3-gadget-fix-for-short-pkts-during-chained-xfers.patch
queue-4.7/usb-renesas_usbhs-gadget-fix-return-value-check-in-usbhs_mod_gadget_probe.patch
queue-4.7/usb-dwc3-gadget-increment-request-actual-once.patch