Input: q40kbd - convert to the new platform device interface

Do not use platform_device_register_simple() as it is going away,
implement ->probe() and ->remove() functions so manual binding and
unbinding will work with this driver.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 57 insertions, 32 deletions

diff --git a/drivers/input/serio/q40kbd.c b/drivers/input/serio/q40kbd.c
index b44d255596c2..d3827c5fe119 100644
--- a/drivers/input/serio/q40kbd.c
+++ b/drivers/input/serio/q40kbd.c
@@ -75,13 +75,13 @@ static irqreturn_t q40kbd_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 
 static void q40kbd_flush(void)
 {
-        int maxread = 100;
+        int maxread = 100;
         unsigned long flags;
 
         spin_lock_irqsave(&q40kbd_lock, flags);
 
-        while (maxread-- && (Q40_IRQ_KEYB_MASK & master_inb(INTERRUPT_REG)))
-                master_inb(KEYCODE_REG);
+        while (maxread-- && (Q40_IRQ_KEYB_MASK & master_inb(INTERRUPT_REG)))
+                master_inb(KEYCODE_REG);
 
         spin_unlock_irqrestore(&q40kbd_lock, flags);
 }
@@ -97,14 +97,14 @@ static int q40kbd_open(struct serio *port)
 
         if (request_irq(Q40_IRQ_KEYBOARD, q40kbd_interrupt, 0, "q40kbd", NULL)) {
                 printk(KERN_ERR "q40kbd.c: Can't get irq %d.\n", Q40_IRQ_KEYBOARD);
-                return -1;
+                return -EBUSY;
         }
 
-        /* off we go */
-        master_outb(-1, KEYBOARD_UNLOCK_REG);
-        master_outb(1, KEY_IRQ_ENABLE_REG);
+        /* off we go */
+        master_outb(-1, KEYBOARD_UNLOCK_REG);
+        master_outb(1, KEY_IRQ_ENABLE_REG);
 
-        return 0;
+        return 0;
 }
 
 static void q40kbd_close(struct serio *port)
@@ -116,48 +116,73 @@ static void q40kbd_close(struct serio *port)
         q40kbd_flush();
 }
 
-static struct serio * __init q40kbd_allocate_port(void)
+static int __devinit q40kbd_probe(struct platform_device *dev)
 {
-        struct serio *serio;
-
-        serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
-        if (serio) {
-                memset(serio, 0, sizeof(struct serio));
-                serio->id.type          = SERIO_8042;
-                serio->open             = q40kbd_open;
-                serio->close            = q40kbd_close;
-                serio->dev.parent       = &q40kbd_device->dev;
-                strlcpy(serio->name, "Q40 Kbd Port", sizeof(serio->name));
-                strlcpy(serio->phys, "Q40", sizeof(serio->phys));
-        }
+        q40kbd_port = kzalloc(sizeof(struct serio), GFP_KERNEL);
+        if (!q40kbd_port)
+                return -ENOMEM;
+
+        q40kbd_port->id.type    = SERIO_8042;
+        q40kbd_port->open       = q40kbd_open;
+        q40kbd_port->close      = q40kbd_close;
+        q40kbd_port->dev.parent = &dev->dev;
+        strlcpy(q40kbd_port->name, "Q40 Kbd Port", sizeof(q40kbd_port->name));
+        strlcpy(q40kbd_port->phys, "Q40", sizeof(q40kbd_port->phys));
+
+        serio_register_port(q40kbd_port);
+        printk(KERN_INFO "serio: Q40 kbd registered\n");
 
-        return serio;
+        return 0;
 }
 
+static int __devexit q40kbd_remove(struct platform_device *dev)
+{
+        serio_unregister_port(q40kbd_port);
+
+        return 0;
+}
+
+static struct platform_driver q40kbd_driver = {
+        .driver         = {
+                .name   = "q40kbd",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = q40kbd_probe,
+        .remove         = __devexit_p(q40kbd_remove),
+};
+
 static int __init q40kbd_init(void)
 {
+        int error;
+
         if (!MACH_IS_Q40)
                 return -EIO;
 
-        q40kbd_device = platform_device_register_simple("q40kbd", -1, NULL, 0);
-        if (IS_ERR(q40kbd_device))
-                return PTR_ERR(q40kbd_device);
+        error = platform_driver_register(&q40kbd_driver);
+        if (error)
+                return error;
 
-        if (!(q40kbd_port = q40kbd_allocate_port())) {
-                platform_device_unregister(q40kbd_device);
-                return -ENOMEM;
-        }
+        q40kbd_device = platform_device_alloc("q40kbd", -1);
+        if (!q40kbd_device)
+                goto err_unregister_driver;
 
-        serio_register_port(q40kbd_port);
-        printk(KERN_INFO "serio: Q40 kbd registered\n");
+        error = platform_device_add(q40kbd_device);
+        if (error)
+                goto err_free_device;
 
         return 0;
+
+ err_free_device:
+        platform_device_put(q40kbd_device);
+ err_unregister_driver:
+        platform_driver_unregister(&q40kbd_driver);
+        return error;
 }
 
 static void __exit q40kbd_exit(void)
 {
-        serio_unregister_port(q40kbd_port);
         platform_device_unregister(q40kbd_device);
+        platform_driver_unregister(&q40kbd_driver);
 }
 
 module_init(q40kbd_init);