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path: root/drivers/usb/serial/ftdi_sio.c
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Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
-rw-r--r--drivers/usb/serial/ftdi_sio.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 4643212eb959..496c0c93ad81 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1406,7 +1406,7 @@ static void ftdi_write_bulk_callback (struct urb *urb)
data_offset = priv->write_offset;
if (data_offset > 0) {
/* Subtract the control bytes */
- countback -= (data_offset * ((countback + (PKTSZ - 1)) / PKTSZ));
+ countback -= (data_offset * DIV_ROUND_UP(countback, PKTSZ));
}
spin_lock_irqsave(&priv->tx_lock, flags);
--priv->tx_outstanding_urbs;
@@ -1506,7 +1506,7 @@ static void ftdi_read_bulk_callback (struct urb *urb)
/* count data bytes, but not status bytes */
countread = urb->actual_length;
- countread -= 2 * ((countread + (PKTSZ - 1)) / PKTSZ);
+ countread -= 2 * DIV_ROUND_UP(countread, PKTSZ);
spin_lock_irqsave(&priv->rx_lock, flags);
priv->rx_bytes += countread;
spin_unlock_irqrestore(&priv->rx_lock, flags);