tty: serial: qcom_geni_serial: Cleanup redundant code

* Remove redundant casting while using min_t
* Remove redundant initialization of port_setup flag
* Remove redundant error checking in get_tx_fifo_size
* Remove logging redundant error code in debug messages
* Remove redundant disable_irq before free_irq

Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 6 insertions, 15 deletions

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index dcd22ca33485..9bf0ca7479c0 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -309,7 +309,7 @@ __qcom_geni_serial_console_write(struct uart_port *uport, const char *s,
                 if (!qcom_geni_serial_poll_bit(uport, SE_GENI_M_IRQ_STATUS,
                                                 M_TX_FIFO_WATERMARK_EN, true))
                         break;
-                chars_to_write = min_t(size_t, (size_t)(count - i), avail / 2);
+                chars_to_write = min_t(size_t, count - i, avail / 2);
                 uart_console_write(uport, s + i, chars_to_write,
                                                 qcom_geni_serial_wr_char);
                 writel_relaxed(M_TX_FIFO_WATERMARK_EN, uport->membase +
@@ -602,7 +602,7 @@ static void qcom_geni_serial_handle_tx(struct uart_port *uport)
                 unsigned int buf = 0;
                 int c;
 
-                tx_bytes = min_t(size_t, remaining, (size_t)port->tx_bytes_pw);
+                tx_bytes = min_t(size_t, remaining, port->tx_bytes_pw);
                 for (c = 0; c < tx_bytes ; c++)
                         buf |= (xmit->buf[tail + c] << (c * BITS_PER_BYTE));
 
@@ -671,20 +671,16 @@ out_unlock:
         return IRQ_HANDLED;
 }
 
-static int get_tx_fifo_size(struct qcom_geni_serial_port *port)
+static void get_tx_fifo_size(struct qcom_geni_serial_port *port)
 {
         struct uart_port *uport;
 
-        if (!port)
-                return -ENODEV;
-
         uport = &port->uport;
         port->tx_fifo_depth = geni_se_get_tx_fifo_depth(&port->se);
         port->tx_fifo_width = geni_se_get_tx_fifo_width(&port->se);
         port->rx_fifo_depth = geni_se_get_rx_fifo_depth(&port->se);
         uport->fifosize =
                 (port->tx_fifo_depth * port->tx_fifo_width) / BITS_PER_BYTE;
-        return 0;
 }
 
 static void set_rfr_wm(struct qcom_geni_serial_port *port)
@@ -706,7 +702,6 @@ static void qcom_geni_serial_shutdown(struct uart_port *uport)
         /* Stop the console before stopping the current tx */
         console_stop(uport->cons);
 
-        disable_irq(uport->irq);
         free_irq(uport->irq, uport);
         spin_lock_irqsave(&uport->lock, flags);
         qcom_geni_serial_stop_tx(uport);
@@ -914,7 +909,7 @@ static int __init qcom_geni_console_setup(struct console *co, char *options)
 
         port = get_port_from_line(co->index);
         if (IS_ERR(port)) {
-                pr_err("Invalid line %d(%d)\n", co->index, (int)PTR_ERR(port));
+                pr_err("Invalid line %d\n", co->index);
                 return PTR_ERR(port);
         }
 
@@ -1030,16 +1025,13 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
 
         if (pdev->dev.of_node)
                 line = of_alias_get_id(pdev->dev.of_node, "serial");
-        else
-                line = pdev->id;
 
         if (line < 0 || line >= GENI_UART_CONS_PORTS)
                 return -ENXIO;
         port = get_port_from_line(line);
         if (IS_ERR(port)) {
-                ret = PTR_ERR(port);
-                dev_err(&pdev->dev, "Invalid line %d(%d)\n", line, ret);
-                return ret;
+                dev_err(&pdev->dev, "Invalid line %d\n", line);
+                return PTR_ERR(port);
         }
 
         uport = &port->uport;
@@ -1076,7 +1068,6 @@ static int qcom_geni_serial_probe(struct platform_device *pdev)
         uport->private_data = &qcom_geni_console_driver;
         platform_set_drvdata(pdev, port);
         port->handle_rx = handle_rx_console;
-        port->setup = false;
         return uart_add_one_port(&qcom_geni_console_driver, uport);
 }