[PATCH] powerpc/40x: Fix assembler warning about r0

[Michael Ellerman]

The assembler says:
  arch/powerpc/kernel/head_40x.S:623: Warning: invalid register expression

It's objecting to the use of r0 as the RA argument. That's because
when RA = 0 the literal value 0 is used, rather than the content of
r0, making the use of r0 in the source potentially confusing.

Fix it to use a literal 0, the generated code is identical.

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---
 arch/powerpc/kernel/head_40x.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index 926bfa73586a..5b282d9965a5 100644
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -620,7 +620,7 @@ _ENTRY(saved_ksp_limit)
 	ori	r6, r6, swapper_pg_dir at l
 	lis	r5, abatron_pteptrs at h
 	ori	r5, r5, abatron_pteptrs at l
-	stw	r5, 0xf0(r0)	/* Must match your Abatron config file */
+	stw	r5, 0xf0(0)	/* Must match your Abatron config file */
 	tophys(r5,r5)
 	stw	r6, 0(r5)
 
-- 
2.25.1