AuxXxilium/linux_dsm_epyc7002
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xhci: remove GFP_DMA flag from allocation

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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.

CC: <stable@vger.kernel.org>
Signed-off-by: Matthias Lange <matthias.lange@kernkonzept.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthias Lange 2017-05-17 18:32:04 +03:00 committed by Greg Kroah-Hartman
parent 63aea0dbab
commit 5db851cf20
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/xhci-mem.c
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@ -56,7 +56,7 @@ static struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci,
} }
if (max_packet) { if (max_packet) {
seg->bounce_buf = kzalloc(max_packet, flags | GFP_DMA); seg->bounce_buf = kzalloc(max_packet, flags);
if (!seg->bounce_buf) { if (!seg->bounce_buf) {
dma_pool_free(xhci->segment_pool, seg->trbs, dma); dma_pool_free(xhci->segment_pool, seg->trbs, dma);
kfree(seg); kfree(seg);