From: Matthias Lange Date: Wed, 17 May 2017 15:32:04 +0000 (+0300) Subject: xhci: remove GFP_DMA flag from allocation X-Git-Tag: archive/raspbian/4.9.30-2+deb9u2+rpi1~6^2~86 X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:///%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:/?a=commitdiff_plain;h=374a3fb5c3b0934cfda09bcf6362058249e7869b;p=linux-4.9.git xhci: remove GFP_DMA flag from allocation 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. Signed-off-by: Matthias Lange Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 709b52841c87..8afb62693857 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -56,7 +56,7 @@ static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci, } 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);