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tty: ar933x_uart: convert to use devm_* functions

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Use devm_* functions in order to simplify cleanup
paths.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gabor Juhos 2013-08-10 09:32:15 +02:00 • committed by Greg Kroah-Hartman
parent aefceaf453
commit a324e4de0c
1 changed files with 9 additions and 19 deletions
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28
drivers/tty/serial/ar933x_uart.c
View file

@ -652,19 +652,18 @@ static int ar933x_uart_probe(struct platform_device *pdev)
return -EINVAL; return -EINVAL;
} }
up = kzalloc(sizeof(struct ar933x_uart_port), GFP_KERNEL); up = devm_kzalloc(&pdev->dev, sizeof(struct ar933x_uart_port),
GFP_KERNEL);
if (!up) if (!up)
return -ENOMEM; return -ENOMEM;
port = &up->port; port = &up->port;
port->membase = devm_ioremap_resource(&pdev->dev, mem_res);
if (IS_ERR(port->membase))
return PTR_ERR(port->membase);
port->mapbase = mem_res->start; port->mapbase = mem_res->start;
port->membase = ioremap(mem_res->start, AR933X_UART_REGS_SIZE);
if (!port->membase) {
ret = -ENOMEM;
goto err_free_up;
}
port->line = id; port->line = id;
port->irq = irq_res->start; port->irq = irq_res->start;
port->dev = &pdev->dev; port->dev = &pdev->dev;
@ -686,16 +685,10 @@ static int ar933x_uart_probe(struct platform_device *pdev)
ret = uart_add_one_port(&ar933x_uart_driver, &up->port); ret = uart_add_one_port(&ar933x_uart_driver, &up->port);
if (ret) if (ret)
goto err_unmap; return ret;
platform_set_drvdata(pdev, up); platform_set_drvdata(pdev, up);
return 0; return 0;
err_unmap:
iounmap(up->port.membase);
err_free_up:
kfree(up);
return ret;
} }
static int ar933x_uart_remove(struct platform_device *pdev) static int ar933x_uart_remove(struct platform_device *pdev)
@ -704,11 +697,8 @@ static int ar933x_uart_remove(struct platform_device *pdev)
up = platform_get_drvdata(pdev); up = platform_get_drvdata(pdev);
if (up) { if (up)
uart_remove_one_port(&ar933x_uart_driver, &up->port); uart_remove_one_port(&ar933x_uart_driver, &up->port);
iounmap(up->port.membase);
kfree(up);
}
return 0; return 0;
} }