diff options
Diffstat (limited to 'drivers/input/serio/i8042.c')
| -rw-r--r-- | drivers/input/serio/i8042.c | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index c60593c8d2be..082afbf088d6 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -48,6 +48,10 @@ static bool i8042_unlock; module_param_named(unlock, i8042_unlock, bool, 0); MODULE_PARM_DESC(unlock, "Ignore keyboard lock."); +static bool i8042_probe_defer; +module_param_named(probe_defer, i8042_probe_defer, bool, 0); +MODULE_PARM_DESC(probe_defer, "Allow deferred probing."); + enum i8042_controller_reset_mode { I8042_RESET_NEVER, I8042_RESET_ALWAYS, @@ -702,7 +706,7 @@ static int i8042_set_mux_mode(bool multiplex, unsigned char *mux_version) * LCS/Telegraphics. */ -static int __init i8042_check_mux(void) +static int i8042_check_mux(void) { unsigned char mux_version; @@ -731,10 +735,10 @@ static int __init i8042_check_mux(void) /* * The following is used to test AUX IRQ delivery. */ -static struct completion i8042_aux_irq_delivered __initdata; -static bool i8042_irq_being_tested __initdata; +static struct completion i8042_aux_irq_delivered; +static bool i8042_irq_being_tested; -static irqreturn_t __init i8042_aux_test_irq(int irq, void *dev_id) +static irqreturn_t i8042_aux_test_irq(int irq, void *dev_id) { unsigned long flags; unsigned char str, data; @@ -761,7 +765,7 @@ static irqreturn_t __init i8042_aux_test_irq(int irq, void *dev_id) * verifies success by readinng CTR. Used when testing for presence of AUX * port. */ -static int __init i8042_toggle_aux(bool on) +static int i8042_toggle_aux(bool on) { unsigned char param; int i; @@ -789,7 +793,7 @@ static int __init i8042_toggle_aux(bool on) * the presence of an AUX interface. */ -static int __init i8042_check_aux(void) +static int i8042_check_aux(void) { int retval = -1; bool irq_registered = false; @@ -996,7 +1000,7 @@ static int i8042_controller_init(void) if (i8042_command(&ctr[n++ % 2], I8042_CMD_CTL_RCTR)) { pr_err("Can't read CTR while initializing i8042\n"); - return -EIO; + return i8042_probe_defer ? -EPROBE_DEFER : -EIO; } } while (n < 2 || ctr[0] != ctr[1]); @@ -1311,7 +1315,7 @@ static void i8042_shutdown(struct platform_device *dev) i8042_controller_reset(false); } -static int __init i8042_create_kbd_port(void) +static int i8042_create_kbd_port(void) { struct serio *serio; struct i8042_port *port = &i8042_ports[I8042_KBD_PORT_NO]; @@ -1339,7 +1343,7 @@ static int __init i8042_create_kbd_port(void) return 0; } -static int __init i8042_create_aux_port(int idx) +static int i8042_create_aux_port(int idx) { struct serio *serio; int port_no = idx < 0 ? I8042_AUX_PORT_NO : I8042_MUX_PORT_NO + idx; @@ -1376,13 +1380,13 @@ static int __init i8042_create_aux_port(int idx) return 0; } -static void __init i8042_free_kbd_port(void) +static void i8042_free_kbd_port(void) { kfree(i8042_ports[I8042_KBD_PORT_NO].serio); i8042_ports[I8042_KBD_PORT_NO].serio = NULL; } -static void __init i8042_free_aux_ports(void) +static void i8042_free_aux_ports(void) { int i; @@ -1392,7 +1396,7 @@ static void __init i8042_free_aux_ports(void) } } -static void __init i8042_register_ports(void) +static void i8042_register_ports(void) { int i; @@ -1444,7 +1448,7 @@ static void i8042_free_irqs(void) i8042_aux_irq_registered = i8042_kbd_irq_registered = false; } -static int __init i8042_setup_aux(void) +static int i8042_setup_aux(void) { int (*aux_enable)(void); int error; @@ -1486,7 +1490,7 @@ static int __init i8042_setup_aux(void) return error; } -static int __init i8042_setup_kbd(void) +static int i8042_setup_kbd(void) { int error; @@ -1536,7 +1540,7 @@ static int i8042_kbd_bind_notifier(struct notifier_block *nb, return 0; } -static int __init i8042_probe(struct platform_device *dev) +static int i8042_probe(struct platform_device *dev) { int error; @@ -1601,6 +1605,7 @@ static struct platform_driver i8042_driver = { .pm = &i8042_pm_ops, #endif }, + .probe = i8042_probe, .remove = i8042_remove, .shutdown = i8042_shutdown, }; @@ -1611,7 +1616,6 @@ static struct notifier_block i8042_kbd_bind_notifier_block = { static int __init i8042_init(void) { - struct platform_device *pdev; int err; dbg_init(); @@ -1627,17 +1631,29 @@ static int __init i8042_init(void) /* Set this before creating the dev to allow i8042_command to work right away */ i8042_present = true; - pdev = platform_create_bundle(&i8042_driver, i8042_probe, NULL, 0, NULL, 0); - if (IS_ERR(pdev)) { - err = PTR_ERR(pdev); + err = platform_driver_register(&i8042_driver); + if (err) goto err_platform_exit; + + i8042_platform_device = platform_device_alloc("i8042", -1); + if (!i8042_platform_device) { + err = -ENOMEM; + goto err_unregister_driver; } + err = platform_device_add(i8042_platform_device); + if (err) + goto err_free_device; + bus_register_notifier(&serio_bus, &i8042_kbd_bind_notifier_block); panic_blink = i8042_panic_blink; return 0; +err_free_device: + platform_device_put(i8042_platform_device); +err_unregister_driver: + platform_driver_unregister(&i8042_driver); err_platform_exit: i8042_platform_exit(); return err; |