[PATCH] drivers/input/joystick: convert to dynamic input_dev allocation

Input: convert drivers/input/joystick to dynamic input_dev allocation

This is required for input_dev sysfs integration

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 48 insertions, 37 deletions

diff --git a/drivers/input/joystick/amijoy.c b/drivers/input/joystick/amijoy.c
index e996183c5b06..8558a99f6635 100644
--- a/drivers/input/joystick/amijoy.c
+++ b/drivers/input/joystick/amijoy.c
@@ -53,11 +53,9 @@ __obsolete_setup("amijoy=");
 
 static int amijoy_used;
 static DECLARE_MUTEX(amijoy_sem);
-static struct input_dev amijoy_dev[2];
+static struct input_dev *amijoy_dev[2];
 static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };
 
-static char *amijoy_name = "Amiga joystick";
-
 static irqreturn_t amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)
 {
         int i, data = 0, button = 0;
@@ -70,15 +68,15 @@ static irqreturn_t amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)
                                 case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
                         }
 
-                        input_regs(amijoy_dev + i, fp);
+                        input_regs(amijoy_dev[i], fp);
 
-                        input_report_key(amijoy_dev + i, BTN_TRIGGER, button);
+                        input_report_key(amijoy_dev[i], BTN_TRIGGER, button);
 
-                        input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
+                        input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
                         data = ~(data ^ (data << 1));
-                        input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
+                        input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
 
-                        input_sync(amijoy_dev + i);
+                        input_sync(amijoy_dev[i]);
                 }
         return IRQ_HANDLED;
 }
@@ -114,39 +112,52 @@ static void amijoy_close(struct input_dev *dev)
 static int __init amijoy_init(void)
 {
         int i, j;
+        int err;
 
-        for (i = 0; i < 2; i++)
-                if (amijoy[i]) {
-                        if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2,
-                                                "amijoy [Denise]")) {
-                                if (i == 1 && amijoy[0]) {
-                                        input_unregister_device(amijoy_dev);
-                                        release_mem_region(CUSTOM_PHYSADDR+10, 2);
-                                }
-                                return -EBUSY;
-                        }
+        for (i = 0; i < 2; i++) {
+                if (!amijoy[i])
+                        continue;
 
-                        amijoy_dev[i].open = amijoy_open;
-                        amijoy_dev[i].close = amijoy_close;
-                        amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
-                        amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
-                        amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
-                        for (j = 0; j < 2; j++) {
-                                amijoy_dev[i].absmin[ABS_X + j] = -1;
-                                amijoy_dev[i].absmax[ABS_X + j] = 1;
-                        }
+                amijoy_dev[i] = input_allocate_device();
+                if (!amijoy_dev[i]) {
+                        err = -ENOMEM;
+                        goto fail;
+                }
 
-                        amijoy_dev[i].name = amijoy_name;
-                        amijoy_dev[i].phys = amijoy_phys[i];
-                        amijoy_dev[i].id.bustype = BUS_AMIGA;
-                        amijoy_dev[i].id.vendor = 0x0001;
-                        amijoy_dev[i].id.product = 0x0003;
-                        amijoy_dev[i].id.version = 0x0100;
+                if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) {
+                        input_free_device(amijoy_dev[i]);
+                        err = -EBUSY;
+                        goto fail;
+                }
 
-                        input_register_device(amijoy_dev + i);
-                        printk(KERN_INFO "input: %s at joy%ddat\n", amijoy_name, i);
+                amijoy_dev[i]->name = "Amiga joystick";
+                amijoy_dev[i]->phys = amijoy_phys[i];
+                amijoy_dev[i]->id.bustype = BUS_AMIGA;
+                amijoy_dev[i]->id.vendor = 0x0001;
+                amijoy_dev[i]->id.product = 0x0003;
+                amijoy_dev[i]->id.version = 0x0100;
+
+                amijoy_dev[i]->open = amijoy_open;
+                amijoy_dev[i]->close = amijoy_close;
+
+                amijoy_dev[i]->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+                amijoy_dev[i]->absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
+                amijoy_dev[i]->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+                for (j = 0; j < 2; j++) {
+                        amijoy_dev[i]->absmin[ABS_X + j] = -1;
+                        amijoy_dev[i]->absmax[ABS_X + j] = 1;
                 }
+
+                input_register_device(amijoy_dev[i]);
+        }
         return 0;
+
+ fail:  while (--i >= 0)
+                if (amijoy[i]) {
+                        input_unregister_device(amijoy_dev[i]);
+                        release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
+                }
+        return err;
 }
 
 static void __exit amijoy_exit(void)
@@ -155,8 +166,8 @@ static void __exit amijoy_exit(void)
 
         for (i = 0; i < 2; i++)
                 if (amijoy[i]) {
-                        input_unregister_device(amijoy_dev + i);
-                        release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2);
+                        input_unregister_device(amijoy_dev[i]);
+                        release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
                 }
 }