serial: omap-serial: fix signess error

"ret" is unsigned, so check for (ret < 0) made no sense.
Made it signed.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/drivers/serial/omap-serial.c b/drivers/serial/omap-serial.c
index 2ee1d3282a8c1fa06b6c37ccc985809da8bfde6c..14365f72b66463ac8f08449820cde53ef3fe20ae 100644 (file)
--- a/drivers/serial/omap-serial.c
+++ b/drivers/serial/omap-serial.c
@@ -1055,7 +1055,7 @@ static void serial_omap_rx_timeout(unsigned long uart_no)
 {
        struct uart_omap_port *up = ui[uart_no];
        unsigned int curr_dma_pos, curr_transmitted_size;
-       unsigned int ret = 0;
+       int ret = 0;
 
        curr_dma_pos = omap_get_dma_dst_pos(up->uart_dma.rx_dma_channel);
        if ((curr_dma_pos == up->uart_dma.prev_rx_dma_pos) ||