strncmp(str, const, len) is error-prone because len is easy to have typo. The example is the hard-coded len has counting error or sizeof(const) forgets - 1. So we prefer using newly introduced str_has_prefix to substitute such strncmp.
Signed-off-by: Chuhong Yuan <hsleste...@gmail.com> --- Changes in v2: - Revise the description. kernel/power/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/power/main.c b/kernel/power/main.c index bdbd605c4215..5e5f64bb3a43 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -495,7 +495,7 @@ static suspend_state_t decode_state(const char *buf, size_t n) len = p ? p - buf : n; /* Check hibernation first. */ - if (len == 4 && !strncmp(buf, "disk", len)) + if (len == 4 && str_has_prefix(buf, "disk")) return PM_SUSPEND_MAX; #ifdef CONFIG_SUSPEND -- 2.20.1