[PATCH 1/2] powerpc/powernv: Avoid strlen() in pnv_restart()

[Thorsten Blum]

Check only the first byte instead of scanning the entire string with
strlen().

Signed-off-by: Thorsten Blum <thorsten.b...@linux.dev>
---
 arch/powerpc/platforms/powernv/setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/powernv/setup.c 
b/arch/powerpc/platforms/powernv/setup.c
index 06ed5e2aa265..2af92e7ba4ee 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -312,7 +312,7 @@ static void  __noreturn pnv_restart(char *cmd)
        pnv_prepare_going_down();
 
        do {
-               if (!cmd || !strlen(cmd))
+               if (!cmd || *cmd == '\0')
                        rc = opal_cec_reboot();
                else if (strcmp(cmd, "full") == 0)
                        rc = opal_cec_reboot2(OPAL_REBOOT_FULL_IPL, NULL);