diff options
Diffstat (limited to 'kernel/printk/printk.c')
| -rw-r--r-- | kernel/printk/printk.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 424abf802f02..ca65327a6de8 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -118,19 +118,29 @@ static unsigned int __read_mostly devkmsg_log = DEVKMSG_LOG_MASK_DEFAULT; static int __control_devkmsg(char *str) { + size_t len; + if (!str) return -EINVAL; - if (!strncmp(str, "on", 2)) { + len = str_has_prefix(str, "on"); + if (len) { devkmsg_log = DEVKMSG_LOG_MASK_ON; - return 2; - } else if (!strncmp(str, "off", 3)) { + return len; + } + + len = str_has_prefix(str, "off"); + if (len) { devkmsg_log = DEVKMSG_LOG_MASK_OFF; - return 3; - } else if (!strncmp(str, "ratelimit", 9)) { + return len; + } + + len = str_has_prefix(str, "ratelimit"); + if (len) { devkmsg_log = DEVKMSG_LOG_MASK_DEFAULT; - return 9; + return len; } + return -EINVAL; } |