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path: root/drivers/tty/serial/ucc_uart.c
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Diffstat (limited to 'drivers/tty/serial/ucc_uart.c')
-rw-r--r--drivers/tty/serial/ucc_uart.c76
1 files changed, 39 insertions, 37 deletions
diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index 3f4848e2174..c327218cad4 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -1194,8 +1194,7 @@ static void uart_firmware_cont(const struct firmware *fw, void *context)
release_firmware(fw);
}
-static int ucc_uart_probe(struct platform_device *ofdev,
- const struct of_device_id *match)
+static int ucc_uart_probe(struct platform_device *ofdev)
{
struct device_node *np = ofdev->dev.of_node;
const unsigned int *iprop; /* Integer OF properties */
@@ -1270,13 +1269,12 @@ static int ucc_uart_probe(struct platform_device *ofdev,
ret = of_address_to_resource(np, 0, &res);
if (ret) {
dev_err(&ofdev->dev, "missing 'reg' property in device tree\n");
- kfree(qe_port);
- return ret;
+ goto out_free;
}
if (!res.start) {
dev_err(&ofdev->dev, "invalid 'reg' property in device tree\n");
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_free;
}
qe_port->port.mapbase = res.start;
@@ -1286,17 +1284,17 @@ static int ucc_uart_probe(struct platform_device *ofdev,
if (!iprop) {
iprop = of_get_property(np, "device-id", NULL);
if (!iprop) {
- kfree(qe_port);
dev_err(&ofdev->dev, "UCC is unspecified in "
"device tree\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_free;
}
}
if ((*iprop < 1) || (*iprop > UCC_MAX_NUM)) {
dev_err(&ofdev->dev, "no support for UCC%u\n", *iprop);
- kfree(qe_port);
- return -ENODEV;
+ ret = -ENODEV;
+ goto out_free;
}
qe_port->ucc_num = *iprop - 1;
@@ -1310,16 +1308,16 @@ static int ucc_uart_probe(struct platform_device *ofdev,
sprop = of_get_property(np, "rx-clock-name", NULL);
if (!sprop) {
dev_err(&ofdev->dev, "missing rx-clock-name in device tree\n");
- kfree(qe_port);
- return -ENODEV;
+ ret = -ENODEV;
+ goto out_free;
}
qe_port->us_info.rx_clock = qe_clock_source(sprop);
if ((qe_port->us_info.rx_clock < QE_BRG1) ||
(qe_port->us_info.rx_clock > QE_BRG16)) {
dev_err(&ofdev->dev, "rx-clock-name must be a BRG for UART\n");
- kfree(qe_port);
- return -ENODEV;
+ ret = -ENODEV;
+ goto out_free;
}
#ifdef LOOPBACK
@@ -1329,39 +1327,39 @@ static int ucc_uart_probe(struct platform_device *ofdev,
sprop = of_get_property(np, "tx-clock-name", NULL);
if (!sprop) {
dev_err(&ofdev->dev, "missing tx-clock-name in device tree\n");
- kfree(qe_port);
- return -ENODEV;
+ ret = -ENODEV;
+ goto out_free;
}
qe_port->us_info.tx_clock = qe_clock_source(sprop);
#endif
if ((qe_port->us_info.tx_clock < QE_BRG1) ||
(qe_port->us_info.tx_clock > QE_BRG16)) {
dev_err(&ofdev->dev, "tx-clock-name must be a BRG for UART\n");
- kfree(qe_port);
- return -ENODEV;
+ ret = -ENODEV;
+ goto out_free;
}
/* Get the port number, numbered 0-3 */
iprop = of_get_property(np, "port-number", NULL);
if (!iprop) {
dev_err(&ofdev->dev, "missing port-number in device tree\n");
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_free;
}
qe_port->port.line = *iprop;
if (qe_port->port.line >= UCC_MAX_UART) {
dev_err(&ofdev->dev, "port-number must be 0-%u\n",
UCC_MAX_UART - 1);
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_free;
}
qe_port->port.irq = irq_of_parse_and_map(np, 0);
if (qe_port->port.irq == NO_IRQ) {
dev_err(&ofdev->dev, "could not map IRQ for UCC%u\n",
qe_port->ucc_num + 1);
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_free;
}
/*
@@ -1373,8 +1371,8 @@ static int ucc_uart_probe(struct platform_device *ofdev,
np = of_find_node_by_type(NULL, "qe");
if (!np) {
dev_err(&ofdev->dev, "could not find 'qe' node\n");
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_free;
}
}
@@ -1382,8 +1380,8 @@ static int ucc_uart_probe(struct platform_device *ofdev,
if (!iprop) {
dev_err(&ofdev->dev,
"missing brg-frequency in device tree\n");
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_np;
}
if (*iprop)
@@ -1398,16 +1396,16 @@ static int ucc_uart_probe(struct platform_device *ofdev,
if (!iprop) {
dev_err(&ofdev->dev,
"missing QE bus-frequency in device tree\n");
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_np;
}
if (*iprop)
qe_port->port.uartclk = *iprop / 2;
else {
dev_err(&ofdev->dev,
"invalid QE bus-frequency in device tree\n");
- kfree(qe_port);
- return -EINVAL;
+ ret = -EINVAL;
+ goto out_np;
}
}
@@ -1445,8 +1443,7 @@ static int ucc_uart_probe(struct platform_device *ofdev,
if (ret) {
dev_err(&ofdev->dev, "could not add /dev/ttyQE%u\n",
qe_port->port.line);
- kfree(qe_port);
- return ret;
+ goto out_np;
}
dev_set_drvdata(&ofdev->dev, qe_port);
@@ -1460,6 +1457,11 @@ static int ucc_uart_probe(struct platform_device *ofdev,
SERIAL_QE_MINOR + qe_port->port.line);
return 0;
+out_np:
+ of_node_put(np);
+out_free:
+ kfree(qe_port);
+ return ret;
}
static int ucc_uart_remove(struct platform_device *ofdev)
@@ -1485,7 +1487,7 @@ static struct of_device_id ucc_uart_match[] = {
};
MODULE_DEVICE_TABLE(of, ucc_uart_match);
-static struct of_platform_driver ucc_uart_of_driver = {
+static struct platform_driver ucc_uart_of_driver = {
.driver = {
.name = "ucc_uart",
.owner = THIS_MODULE,
@@ -1510,7 +1512,7 @@ static int __init ucc_uart_init(void)
return ret;
}
- ret = of_register_platform_driver(&ucc_uart_of_driver);
+ ret = platform_driver_register(&ucc_uart_of_driver);
if (ret)
printk(KERN_ERR
"ucc-uart: could not register platform driver\n");
@@ -1523,7 +1525,7 @@ static void __exit ucc_uart_exit(void)
printk(KERN_INFO
"Freescale QUICC Engine UART device driver unloading\n");
- of_unregister_platform_driver(&ucc_uart_of_driver);
+ platform_driver_unregister(&ucc_uart_of_driver);
uart_unregister_driver(&ucc_uart_driver);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 17:51:15 +0000