powerpc/pseries: Remove unused r0 in the hcall tracing code

In the plpar_hcall trace code, currently we use r0
to store the value of r4. But this value is not
used subsequently in the code. Hence remove this unused
save to r0 in plpar_hcall and plpar_hcall9

Suggested-by: Naveen N Rao <naveen@kernel.org>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230929172337.7906-2-atrajeev@linux.vnet.ibm.com

diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index 2addf2ea03f09646d89592605e531441029a89aa..2b0cac6fb61f87d513e9d2f969c9c0322490cfec 100644 (file)
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -184,8 +184,6 @@ _GLOBAL_TOC(plpar_hcall)
 plpar_hcall_trace:
        HCALL_INST_PRECALL(R5)
 
-       mr      r0,r4
-
        mr      r4,r5
        mr      r5,r6
        mr      r6,r7
@@ -295,8 +293,6 @@ _GLOBAL_TOC(plpar_hcall9)
 plpar_hcall9_trace:
        HCALL_INST_PRECALL(R5)
 
-       mr      r0,r4
-
        mr      r4,r5
        mr      r5,r6
        mr      r6,r7