Fix rom_reserve()/rom_confirm() for CSM oprom dispatch

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/csm.c b/src/csm.c
index 64172ea..057e529 100644
--- a/src/csm.c
+++ b/src/csm.c
@@ -193,11 +193,13 @@ handle_csm_0005(struct bregs *regs)
     rom = MAKE_FLATPTR(table->OpromSegment, 0);
     bdf = pci_bus_devfn_to_bdf(table->PciBus, table->PciDeviceFunction);
 
-    rom_confirm(rom->size * 512);
+    rom_reserve(rom->size * 512);
 
     // XX PnP seg/ofs should never be other than default
     callrom(rom, bdf);
 
+    rom_confirm(rom->size * 512);
+
     regs->bx = 0; // FIXME
     regs->ax = 0;
 }