Commit b51ba4fe authored Aug 06, 2020 by Christophe Leroy Committed by Michael Ellerman Sep 02, 2020

powerpc/32s: Fix assembler warning about r0

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@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/2b69ac8e1cddff6f808fc7415907179eab4aae9e.1596693679.git.christophe.leroy@csgroup.eu

parent 3ced132a

arch/powerpc/kernel/head_32.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -1092,7 +1092,7 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_HPTE_TABLE)
		*/
		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)