[PATCH 4.19 102/133] serial: mxs-auart: add missed iounmap() in probe failure and remove

[Greg Kroah-Hartman]

From: Chuhong Yuan <hsleste...@gmail.com>

commit d8edf8eb5f6e921fe6389f96d2cd05862730a6ff upstream.

This driver calls ioremap() in probe, but it misses calling iounmap() in
probe's error handler and remove.
Add the missed calls to fix it.

Fixes: 47d37d6f94cc ("serial: Add auart driver for i.MX23/28")
Signed-off-by: Chuhong Yuan <hsleste...@gmail.com>
Cc: stable <sta...@vger.kernel.org>
Link: https://lore.kernel.org/r/20200709135608.68290-1-hsleste...@gmail.com
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/tty/serial/mxs-auart.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -1703,21 +1703,21 @@ static int mxs_auart_probe(struct platfo
        irq = platform_get_irq(pdev, 0);
        if (irq < 0) {
                ret = irq;
-               goto out_disable_clks;
+               goto out_iounmap;
        }
 
        s->port.irq = irq;
        ret = devm_request_irq(&pdev->dev, irq, mxs_auart_irq_handle, 0,
                               dev_name(&pdev->dev), s);
        if (ret)
-               goto out_disable_clks;
+               goto out_iounmap;
 
        platform_set_drvdata(pdev, s);
 
        ret = mxs_auart_init_gpios(s, &pdev->dev);
        if (ret) {
                dev_err(&pdev->dev, "Failed to initialize GPIOs.\n");
-               goto out_disable_clks;
+               goto out_iounmap;
        }
 
        /*
@@ -1725,7 +1725,7 @@ static int mxs_auart_probe(struct platfo
         */
        ret = mxs_auart_request_gpio_irq(s);
        if (ret)
-               goto out_disable_clks;
+               goto out_iounmap;
 
        auart_port[s->port.line] = s;
 
@@ -1751,6 +1751,9 @@ out_free_qpio_irq:
        mxs_auart_free_gpio_irq(s);
        auart_port[pdev->id] = NULL;
 
+out_iounmap:
+       iounmap(s->port.membase);
+
 out_disable_clks:
        if (is_asm9260_auart(s)) {
                clk_disable_unprepare(s->clk);
@@ -1766,6 +1769,7 @@ static int mxs_auart_remove(struct platf
        uart_remove_one_port(&auart_driver, &s->port);
        auart_port[pdev->id] = NULL;
        mxs_auart_free_gpio_irq(s);
+       iounmap(s->port.membase);
        if (is_asm9260_auart(s)) {
                clk_disable_unprepare(s->clk);
                clk_disable_unprepare(s->clk_ahb);