diff options
Diffstat (limited to 'drivers/tty/serial/mxs-auart.c')
| -rw-r--r-- | drivers/tty/serial/mxs-auart.c | 45 |
1 files changed, 11 insertions, 34 deletions
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index 8ecf622602cb..f414d6acad69 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -34,8 +34,6 @@ #include <linux/dma-mapping.h> #include <linux/dmaengine.h> -#include <asm/cacheflush.h> - #include <linux/gpio/consumer.h> #include <linux/err.h> #include <linux/irq.h> @@ -1535,34 +1533,6 @@ disable_clk_ahb: return err; } -/* - * This function returns 1 if pdev isn't a device instatiated by dt, 0 if it - * could successfully get all information from dt or a negative errno. - */ -static int serial_mxs_probe_dt(struct mxs_auart_port *s, - struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - int ret; - - if (!np) - /* no device tree device */ - return 1; - - ret = of_alias_get_id(np, "serial"); - if (ret < 0) { - dev_err(&pdev->dev, "failed to get alias id: %d\n", ret); - return ret; - } - s->port.line = ret; - - if (of_get_property(np, "uart-has-rtscts", NULL) || - of_get_property(np, "fsl,uart-has-rtscts", NULL) /* deprecated */) - set_bit(MXS_AUART_RTSCTS, &s->flags); - - return 0; -} - static int mxs_auart_init_gpios(struct mxs_auart_port *s, struct device *dev) { enum mctrl_gpio_idx i; @@ -1631,6 +1601,7 @@ static int mxs_auart_request_gpio_irq(struct mxs_auart_port *s) static int mxs_auart_probe(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; struct mxs_auart_port *s; u32 version; int ret, irq; @@ -1643,11 +1614,17 @@ static int mxs_auart_probe(struct platform_device *pdev) s->port.dev = &pdev->dev; s->dev = &pdev->dev; - ret = serial_mxs_probe_dt(s, pdev); - if (ret > 0) - s->port.line = pdev->id < 0 ? 0 : pdev->id; - else if (ret < 0) + ret = of_alias_get_id(np, "serial"); + if (ret < 0) { + dev_err(&pdev->dev, "failed to get alias id: %d\n", ret); return ret; + } + s->port.line = ret; + + if (of_get_property(np, "uart-has-rtscts", NULL) || + of_get_property(np, "fsl,uart-has-rtscts", NULL) /* deprecated */) + set_bit(MXS_AUART_RTSCTS, &s->flags); + if (s->port.line >= ARRAY_SIZE(auart_port)) { dev_err(&pdev->dev, "serial%d out of range\n", s->port.line); return -EINVAL; |