Patch "xhci: remove GFP_DMA flag from allocation" has been added to the 4.11-stable tree

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

xhci: remove GFP_DMA flag from allocation

to the 4.11-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:
xhci-remove-gfp_dma-flag-from-allocation.patch
and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Matthias Lange <[email protected]>
Date: Wed, 17 May 2017 18:32:04 +0300
Subject: xhci: remove GFP_DMA flag from allocation

From: Matthias Lange <[email protected]>

commit 5db851cf20857c5504b146046e97cb7781f2a743 upstream.

There is no reason to restrict allocations to the first 16MB ISA DMA addresses.

It is causing problems in a virtualization setup with enabled IOMMU (x86_64). The result is that USB is not working in the VM.

---
 drivers/usb/host/xhci-mem.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -56,7 +56,7 @@ static struct xhci_segment *xhci_segment
 	}
 
 	if (max_packet) {
-		seg->bounce_buf = kzalloc(max_packet, flags | GFP_DMA);
+		seg->bounce_buf = kzalloc(max_packet, flags);
 		if (!seg->bounce_buf) {
 			dma_pool_free(xhci->segment_pool, seg->trbs, dma);
 			kfree(seg);

Patches currently in stable-queue which might be from [email protected] are

queue-4.11/xhci-remove-gfp_dma-flag-from-allocation.patch