[PATCH 1/2] powerpc/powernv: Avoid strlen() in pnv_restart()
From: Thorsten Blum <thorsten.blum@linux.dev>
Date: 2026-07-21 15:54:51
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Check only the first byte instead of scanning the entire string with strlen(). Signed-off-by: Thorsten Blum <thorsten.blum@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);