diff options
Diffstat (limited to 'drivers/char/amiserial.c')
| -rw-r--r-- | drivers/char/amiserial.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index 4e0cfdeab14..a58869ea851 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -1963,6 +1963,7 @@ static int __init rs_init(void) { unsigned long flags; struct serial_state * state; + int error; if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_SERIAL)) return -ENODEV; @@ -1975,8 +1976,11 @@ static int __init rs_init(void) * We request SERDAT and SERPER only, because the serial registers are * too spreaded over the custom register space */ - if (!request_mem_region(CUSTOM_PHYSADDR+0x30, 4, "amiserial [Paula]")) - return -EBUSY; + if (!request_mem_region(CUSTOM_PHYSADDR+0x30, 4, + "amiserial [Paula]")) { + error = -EBUSY; + goto fail_put_tty_driver; + } IRQ_ports = NULL; @@ -1997,8 +2001,9 @@ static int __init rs_init(void) serial_driver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(serial_driver, &serial_ops); - if (tty_register_driver(serial_driver)) - panic("Couldn't register serial driver\n"); + error = tty_register_driver(serial_driver); + if (error) + goto fail_release_mem_region; state = rs_table; state->magic = SSTATE_MAGIC; @@ -2024,8 +2029,14 @@ static int __init rs_init(void) local_irq_save(flags); /* set ISRs, and then disable the rx interrupts */ - request_irq(IRQ_AMIGA_TBE, ser_tx_int, 0, "serial TX", state); - request_irq(IRQ_AMIGA_RBF, ser_rx_int, IRQF_DISABLED, "serial RX", state); + error = request_irq(IRQ_AMIGA_TBE, ser_tx_int, 0, "serial TX", state); + if (error) + goto fail_unregister; + + error = request_irq(IRQ_AMIGA_RBF, ser_rx_int, IRQF_DISABLED, + "serial RX", state); + if (error) + goto fail_free_irq; /* turn off Rx and Tx interrupts */ custom.intena = IF_RBF | IF_TBE; @@ -2045,6 +2056,16 @@ static int __init rs_init(void) ciab.ddra &= ~(SER_DCD | SER_CTS | SER_DSR); /* inputs */ return 0; + +fail_free_irq: + free_irq(IRQ_AMIGA_TBE, state); +fail_unregister: + tty_unregister_driver(serial_driver); +fail_release_mem_region: + release_mem_region(CUSTOM_PHYSADDR+0x30, 4); +fail_put_tty_driver: + put_tty_driver(serial_driver); + return error; } static __exit void rs_exit(void) @@ -2064,6 +2085,9 @@ static __exit void rs_exit(void) kfree(info); } + free_irq(IRQ_AMIGA_TBE, rs_table); + free_irq(IRQ_AMIGA_RBF, rs_table); + release_mem_region(CUSTOM_PHYSADDR+0x30, 4); } |