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-rw-r--r--OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm2
1 files changed, 1 insertions, 1 deletions
diff --git a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm
index e46af81e8d..248d52237e 100644
--- a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm
+++ b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm
@@ -29,7 +29,7 @@ IoReadFifo8 PROC
mov dx, [esp + 4]
mov ecx, [esp + 8]
push edi
- mov edx, [esp + 16]
+ mov edi, [esp + 16]
rep insb
pop edi
ret