[PATCH 5.4 119/147] powerpc/32s: Fix build failure with CONFIG_PPC_KUAP_DEBUG

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From: Christophe Leroy <christophe.leroy@xxxxxx>

commit 4833ce06e6855d526234618b746ffb71d6612c9a upstream.

gpr2 is not a parametre of kuap_check(), it doesn't exist.

Use gpr instead.

Fixes: a68c31fc01ef ("powerpc/32s: Implement Kernel Userspace Access Protection")
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/ea599546f2a7771bde551393889e44e6b2632332.1587368807.git.christophe.leroy@xxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/powerpc/include/asm/book3s/32/kup.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/include/asm/book3s/32/kup.h
+++ b/arch/powerpc/include/asm/book3s/32/kup.h
@@ -75,7 +75,7 @@
 
 .macro kuap_check	current, gpr
 #ifdef CONFIG_PPC_KUAP_DEBUG
-	lwz	\gpr2, KUAP(thread)
+	lwz	\gpr, KUAP(thread)
 999:	twnei	\gpr, 0
 	EMIT_BUG_ENTRY 999b, __FILE__, __LINE__, (BUGFLAG_WARNING | BUGFLAG_ONCE)
 #endif





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