diff options
Diffstat (limited to 'drivers/tty/serial/sprd_serial.c')
| -rw-r--r-- | drivers/tty/serial/sprd_serial.c | 36 |
1 files changed, 5 insertions, 31 deletions
diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c index 509781ee26bf..23baf8cf1a3b 100644 --- a/drivers/tty/serial/sprd_serial.c +++ b/drivers/tty/serial/sprd_serial.c @@ -1102,29 +1102,6 @@ static struct uart_driver sprd_uart_driver = { .cons = SPRD_CONSOLE, }; -static int sprd_probe_dt_alias(int index, struct device *dev) -{ - struct device_node *np; - int ret = index; - - if (!IS_ENABLED(CONFIG_OF)) - return ret; - - np = dev->of_node; - if (!np) - return ret; - - ret = of_alias_get_id(np, "serial"); - if (ret < 0) - ret = index; - else if (ret >= ARRAY_SIZE(sprd_port) || sprd_port[ret] != NULL) { - dev_warn(dev, "requested serial port %d not available.\n", ret); - ret = index; - } - - return ret; -} - static int sprd_remove(struct platform_device *dev) { struct sprd_uart_port *sup = platform_get_drvdata(dev); @@ -1203,14 +1180,11 @@ static int sprd_probe(struct platform_device *pdev) int index; int ret; - for (index = 0; index < ARRAY_SIZE(sprd_port); index++) - if (sprd_port[index] == NULL) - break; - - if (index == ARRAY_SIZE(sprd_port)) - return -EBUSY; - - index = sprd_probe_dt_alias(index, &pdev->dev); + index = of_alias_get_id(pdev->dev.of_node, "serial"); + if (index < 0 || index >= ARRAY_SIZE(sprd_port)) { + dev_err(&pdev->dev, "got a wrong serial alias id %d\n", index); + return -EINVAL; + } sprd_port[index] = devm_kzalloc(&pdev->dev, sizeof(*sprd_port[index]), GFP_KERNEL); |