diff options
| -rw-r--r-- | drivers/s390/cio/qdio_debug.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index f8b03a636e4..0e615cb912d 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -188,19 +188,13 @@ static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf, struct qdio_irq *irq_ptr = seq->private; struct qdio_q *q; unsigned long val; - char buf[8]; int ret, i; if (!irq_ptr) return 0; - if (count >= sizeof(buf)) - return -EINVAL; - if (copy_from_user(&buf, ubuf, count)) - return -EFAULT; - buf[count] = 0; - - ret = strict_strtoul(buf, 10, &val); - if (ret < 0) + + ret = kstrtoul_from_user(ubuf, count, 10, &val); + if (ret) return ret; switch (val) { |