diff options
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/sclp_async.c | 38 |
1 files changed, 7 insertions, 31 deletions
diff --git a/drivers/s390/char/sclp_async.c b/drivers/s390/char/sclp_async.c index ee6f3b563728..e69b12a40636 100644 --- a/drivers/s390/char/sclp_async.c +++ b/drivers/s390/char/sclp_async.c @@ -64,42 +64,18 @@ static struct notifier_block call_home_panic_nb = { .priority = INT_MAX, }; -static int proc_handler_callhome(struct ctl_table *ctl, int write, - void __user *buffer, size_t *count, - loff_t *ppos) -{ - unsigned long val; - int len, rc; - char buf[3]; - - if (!*count || (*ppos && !write)) { - *count = 0; - return 0; - } - if (!write) { - len = snprintf(buf, sizeof(buf), "%d\n", callhome_enabled); - rc = copy_to_user(buffer, buf, sizeof(buf)); - if (rc != 0) - return -EFAULT; - } else { - len = *count; - rc = kstrtoul_from_user(buffer, len, 0, &val); - if (rc) - return rc; - if (val != 0 && val != 1) - return -EINVAL; - callhome_enabled = val; - } - *count = len; - *ppos += len; - return 0; -} +static int zero; +static int one = 1; static struct ctl_table callhome_table[] = { { .procname = "callhome", + .data = &callhome_enabled, + .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_handler_callhome, + .proc_handler = proc_dointvec_minmax, + .extra1 = &zero, + .extra2 = &one, }, {} }; |