serial: tegra: Use unsigned types for RX and TX byte counts

The function tty_insert_flip_string() takes an argument "size" which is
of type size_t. This is an unsigned type. Update the count,
rx_bytes_requested and tx_bytes_requested in the tegra serial driver to
be unsigned integers so that an unsigned type is passed to
tty_insert_flip_string().

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index 17d8a08b047beea26de7bfbaf266e252d17a2dc2..a5312e4b6393500a1c36a0b61de577da13919c04 100644 (file)
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -131,8 +131,8 @@ struct tegra_uart_port {
        struct dma_async_tx_descriptor          *rx_dma_desc;
        dma_cookie_t                            tx_cookie;
        dma_cookie_t                            rx_cookie;
-       int                                     tx_bytes_requested;
-       int                                     rx_bytes_requested;
+       unsigned int                            tx_bytes_requested;
+       unsigned int                            rx_bytes_requested;
 };
 
 static void tegra_uart_start_next_tx(struct tegra_uart_port *tup);
@@ -408,7 +408,7 @@ static void tegra_uart_tx_dma_complete(void *args)
        struct circ_buf *xmit = &tup->uport.state->xmit;
        struct dma_tx_state state;
        unsigned long flags;
-       int count;
+       unsigned int count;
 
        dmaengine_tx_status(tup->tx_dma_chan, tup->rx_cookie, &state);
        count = tup->tx_bytes_requested - state.residue;
@@ -500,7 +500,7 @@ static void tegra_uart_stop_tx(struct uart_port *u)
        struct tegra_uart_port *tup = to_tegra_uport(u);
        struct circ_buf *xmit = &tup->uport.state->xmit;
        struct dma_tx_state state;
-       int count;
+       unsigned int count;
 
        if (tup->tx_in_progress != TEGRA_UART_TX_DMA)
                return;
@@ -550,7 +550,8 @@ static void tegra_uart_handle_rx_pio(struct tegra_uart_port *tup,
 }
 
 static void tegra_uart_copy_rx_to_tty(struct tegra_uart_port *tup,
-               struct tty_port *tty, int count)
+                                     struct tty_port *tty,
+                                     unsigned int count)
 {
        int copied;
 
@@ -579,7 +580,7 @@ static void tegra_uart_rx_dma_complete(void *args)
 {
        struct tegra_uart_port *tup = args;
        struct uart_port *u = &tup->uport;
-       int count = tup->rx_bytes_requested;
+       unsigned int count = tup->rx_bytes_requested;
        struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port);
        struct tty_port *port = &u->state->port;
        unsigned long flags;
@@ -628,7 +629,7 @@ static void tegra_uart_handle_rx_dma(struct tegra_uart_port *tup,
        struct tty_struct *tty = tty_port_tty_get(&tup->uport.state->port);
        struct tty_port *port = &tup->uport.state->port;
        struct uart_port *u = &tup->uport;
-       int count;
+       unsigned int count;
 
        /* Deactivate flow control to stop sender */
        if (tup->rts_active)