diff options
Diffstat (limited to 'drivers/tty/serial/amba-pl011.c')
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index d58783d364e3..d4eda24aa68b 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2154,9 +2154,19 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) amba_ports[i] = uap; amba_set_drvdata(dev, uap); + + if (!amba_reg.state) { + ret = uart_register_driver(&amba_reg); + if (ret < 0) { + pr_err("Failed to register AMBA-PL011 driver\n"); + return ret; + } + } + ret = uart_add_one_port(&amba_reg, &uap->port); if (ret) { amba_ports[i] = NULL; + uart_unregister_driver(&amba_reg); pl011_dma_remove(uap); } out: @@ -2175,6 +2185,7 @@ static int pl011_remove(struct amba_device *dev) amba_ports[i] = NULL; pl011_dma_remove(uap); + uart_unregister_driver(&amba_reg); return 0; } @@ -2230,22 +2241,14 @@ static struct amba_driver pl011_driver = { static int __init pl011_init(void) { - int ret; printk(KERN_INFO "Serial: AMBA PL011 UART driver\n"); - ret = uart_register_driver(&amba_reg); - if (ret == 0) { - ret = amba_driver_register(&pl011_driver); - if (ret) - uart_unregister_driver(&amba_reg); - } - return ret; + return amba_driver_register(&pl011_driver); } static void __exit pl011_exit(void) { amba_driver_unregister(&pl011_driver); - uart_unregister_driver(&amba_reg); } /* |