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Subject[PATCH 05/11] tty: serial: omap: switch over to devm_ioremap_resource
Date
just using helper function to remove some duplicated
code a bit. While at that, also move allocation of
struct uart_omap_port higher in the code so that
we return much earlier in case of no memory.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
drivers/tty/serial/omap-serial.c | 32 +++++++++-----------------------
1 file changed, 9 insertions(+), 23 deletions(-)

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index d041060..d785327 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1627,6 +1627,7 @@ static int serial_omap_probe(struct platform_device *pdev)
struct omap_uart_port_info *omap_up_info = dev_get_platdata(&pdev->dev);
struct uart_omap_port *up;
struct resource *mem;
+ void __iomem *base;
int uartirq = 0;
int wakeirq = 0;
int ret;
@@ -1645,17 +1646,14 @@ static int serial_omap_probe(struct platform_device *pdev)
return -EPROBE_DEFER;
}

- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!mem) {
- dev_err(&pdev->dev, "no mem resource?\n");
- return -ENODEV;
- }
+ up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL);
+ if (!up)
+ return -ENOMEM;

- if (!devm_request_mem_region(&pdev->dev, mem->start, resource_size(mem),
- pdev->dev.driver->name)) {
- dev_err(&pdev->dev, "memory region already claimed\n");
- return -EBUSY;
- }
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(base))
+ return PTR_ERR(base);

if (gpio_is_valid(omap_up_info->DTR_gpio) &&
omap_up_info->DTR_present) {
@@ -1669,10 +1667,6 @@ static int serial_omap_probe(struct platform_device *pdev)
return ret;
}

- up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL);
- if (!up)
- return -ENOMEM;
-
if (gpio_is_valid(omap_up_info->DTR_gpio) &&
omap_up_info->DTR_present) {
up->DTR_gpio = omap_up_info->DTR_gpio;
@@ -1715,14 +1709,7 @@ static int serial_omap_probe(struct platform_device *pdev)

sprintf(up->name, "OMAP UART%d", up->port.line);
up->port.mapbase = mem->start;
- up->port.membase = devm_ioremap(&pdev->dev, mem->start,
- resource_size(mem));
- if (!up->port.membase) {
- dev_err(&pdev->dev, "can't ioremap UART\n");
- ret = -ENOMEM;
- goto err_ioremap;
- }
-
+ up->port.membase = base;
up->port.flags = omap_up_info->flags;
up->port.uartclk = omap_up_info->uartclk;
if (!up->port.uartclk) {
@@ -1769,7 +1756,6 @@ static int serial_omap_probe(struct platform_device *pdev)
err_add_port:
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
-err_ioremap:
err_rs485:
err_port_line:
dev_err(&pdev->dev, "[UART%d]: failure [%s]: %d\n",
--
1.9.1.286.g5172cb3


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