[PATCH 5.4 044/367] powerpc/32s: Fix assembler warning about r0

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5.4-stable review patch.  If anyone has any objections, please let me know.


From: Christophe Leroy <christophe.leroy@xxxxxxxxxx>

commit b51ba4fe2e134b631f9c8f45423707aab71449b5 upstream.

The assembler says:
  arch/powerpc/kernel/head_32.S:1095: 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: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/2b69ac8e1cddff6f808fc7415907179eab4aae9e.1596693679.git.christophe.leroy@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
 arch/powerpc/kernel/head_32.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
 	lis	r5, abatron_pteptrs@h
 	ori	r5, r5, abatron_pteptrs@l
-	stw	r5, 0xf0(r0)	/* This much match your Abatron config */
+	stw	r5, 0xf0(0)	/* This much match your Abatron config */
 	lis	r6, swapper_pg_dir@h
 	ori	r6, r6, swapper_pg_dir@l
 	tophys(r5, r5)

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