From: Chuhong Yuan hslester96@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 hslester96@gmail.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20200709135608.68290-1-hslester96@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@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 @@ -1698,21 +1698,21 @@ 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; }
/* @@ -1720,7 +1720,7 @@ 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;
@@ -1746,6 +1746,9 @@ 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); @@ -1761,6 +1764,7 @@ 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);