The mxs platform is devicetree-only, so there is no need to check
whether it was instantiated via devicetree.
Simplify the code my removing serial_mxs_probe_dt() and add its
content into the main probe function.
Signed-off-by: Fabio Estevam <festevam@xxxxxxxxx>
---
drivers/tty/serial/mxs-auart.c | 43 +++++++++-------------------------
1 file changed, 11 insertions(+), 32 deletions(-)
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 8ecf622602cb..01fedb41cf93 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -1535,34 +1535,6 @@ static int mxs_get_clks(struct mxs_auart_port *s,
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 +1603,7 @@ 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 +1616,17 @@ 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;
--
2.17.1
