MIPS: ftrace: Remove pointer comparison to 0 in prepare_ftrace_return

Replace pointer comparison to 0 with NULL in prepare_ftrace_return
to improve code readability. Identified with coccinelle script
'badzero.cocci'.

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/18494/
Signed-off-by: James Hogan <jhogan@kernel.org>

diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c
index 99285be..7f3dfdb 100644 (file)
--- a/arch/mips/kernel/ftrace.c
+++ b/arch/mips/kernel/ftrace.c
@@ -361,7 +361,7 @@ void prepare_ftrace_return(unsigned long *parent_ra_addr, unsigned long self_ra,
         * If fails when getting the stack address of the non-leaf function's
         * ra, stop function graph tracer and return
         */
-       if (parent_ra_addr == 0)
+       if (parent_ra_addr == NULL)
                goto out;
 #endif
        /* *parent_ra_addr = return_hooker; */