diff options
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 92f571645f36..f39448a0d301 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -2493,13 +2493,10 @@ static ssize_t comedi_read(struct file *file, char __user *buf, size_t nbytes, while (nbytes > 0 && !retval) { set_current_state(TASK_INTERRUPTIBLE); - n = nbytes; - m = comedi_buf_read_n_available(s); if (async->buf_read_ptr + m > async->prealloc_bufsz) m = async->prealloc_bufsz - async->buf_read_ptr; - if (m < n) - n = m; + n = min_t(size_t, m, nbytes); if (n == 0) { unsigned runflags = comedi_get_subdevice_runflags(s); |