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[Xen-devel] [PATCH V15 14/18] pci: Use of qemu_put_ram_ptr in pci_add_option_rom.

From: John Baboval <john.baboval@xxxxxxxxxxxxxxxxxxx>

Prevent a deadlock caused by leaving a map cache bucket locked by the
preceding qemu_get_ram_ptr() call.

Signed-off-By: John Baboval <john.baboval@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
 hw/pci.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/hw/pci.c b/hw/pci.c
index 6b577e1..2b24dd4 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -1897,6 +1897,8 @@ static int pci_add_option_rom(PCIDevice *pdev, bool 
         pci_patch_ids(pdev, ptr, size);
+    qemu_put_ram_ptr(ptr);
     pci_register_bar(pdev, PCI_ROM_SLOT, size,
                      0, pci_map_option_rom);

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