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serial: 8250_dw: add separate pointer for the uart_port to dw8250_probe 

For convenience, adding separate pointer for the "port"
member of struct uart_8250_port that is being filled in the
probe function.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2015-09-21 14:17:24 +03:00 committed by Greg Kroah-Hartman
parent d05f15707b
commit 78d3da75d5
1 changed files with 19 additions and 21 deletions
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40
drivers/tty/serial/8250/8250_dw.c
View File

@ -404,6 +404,7 @@ static int dw8250_probe(struct platform_device *pdev)
struct uart_8250_port uart = {};
struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
int irq = platform_get_irq(pdev, 0);
struct uart_port *p = &uart.port;
struct dw8250_data *data;
int err;
@ -418,18 +419,20 @@ static int dw8250_probe(struct platform_device *pdev)
return irq;
}
spin_lock_init(&uart.port.lock);
uart.port.mapbase = regs->start;
uart.port.irq = irq;
uart.port.handle_irq = dw8250_handle_irq;
uart.port.pm = dw8250_do_pm;
uart.port.type = PORT_8250;
uart.port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT;
uart.port.dev = &pdev->dev;
spin_lock_init(&p->lock);
p->mapbase = regs->start;
p->irq = irq;
p->handle_irq = dw8250_handle_irq;
p->pm = dw8250_do_pm;
p->type = PORT_8250;
p->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_FIXED_PORT;
p->dev = &pdev->dev;
p->iotype = UPIO_MEM;
p->serial_in = dw8250_serial_in;
p->serial_out = dw8250_serial_out;
uart.port.membase = devm_ioremap(&pdev->dev, regs->start,
resource_size(regs));
if (!uart.port.membase)
p->membase = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
if (!p->membase)
return -ENOMEM;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
@ -437,10 +440,10 @@ static int dw8250_probe(struct platform_device *pdev)
return -ENOMEM;
data->usr_reg = DW_UART_USR;
p->private_data = data;
/* Always ask for fixed clock rate from a property. */
device_property_read_u32(&pdev->dev, "clock-frequency",
&uart.port.uartclk);
device_property_read_u32(p->dev, "clock-frequency", &p->uartclk);
/* If there is separate baudclk, get the rate from it. */
data->clk = devm_clk_get(&pdev->dev, "baudclk");
@ -454,11 +457,11 @@ static int dw8250_probe(struct platform_device *pdev)
dev_warn(&pdev->dev, "could not enable optional baudclk: %d\n",
err);
else
uart.port.uartclk = clk_get_rate(data->clk);
p->uartclk = clk_get_rate(data->clk);
}
/* If no clock rate is defined, fail. */
if (!uart.port.uartclk) {
if (!p->uartclk) {
dev_err(&pdev->dev, "clock rate not defined\n");
return -EINVAL;
}
@ -488,13 +491,8 @@ static int dw8250_probe(struct platform_device *pdev)
data->dma.tx_param = data;
data->dma.fn = dw8250_dma_filter;
uart.port.iotype = UPIO_MEM;
uart.port.serial_in = dw8250_serial_in;
uart.port.serial_out = dw8250_serial_out;
uart.port.private_data = data;
if (pdev->dev.of_node) {
err = dw8250_probe_of(&uart.port, data);
err = dw8250_probe_of(p, data);
if (err)
goto err_reset;
} else if (ACPI_HANDLE(&pdev->dev)) {