[PARISC] Convert HIL drivers to use input_allocate_device

Convert HIL drivers to use input_allocate_device() - avoids crashes.

Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 48 insertions, 43 deletions

diff --git a/drivers/input/mouse/hil_ptr.c b/drivers/input/mouse/hil_ptr.c
index c2bf2ed07dc6..a648f9fe3d95 100644
--- a/drivers/input/mouse/hil_ptr.c
+++ b/drivers/input/mouse/hil_ptr.c
@@ -55,7 +55,7 @@ MODULE_LICENSE("Dual BSD/GPL");
 #define HIL_PTR_MAX_LENGTH 16
 
 struct hil_ptr {
-        struct input_dev dev;
+        struct input_dev *dev;
         struct serio *serio;
 
         /* Input buffer and index for packets from HIL bus. */
@@ -79,7 +79,7 @@ struct hil_ptr {
 /* Process a complete packet after transfer from the HIL */
 static void hil_ptr_process_record(struct hil_ptr *ptr)
 {
-        struct input_dev *dev = &ptr->dev;
+        struct input_dev *dev = ptr->dev;
         hil_packet *data = ptr->data;
         hil_packet p;
         int idx, i, cnt, laxis;
@@ -148,12 +148,12 @@ static void hil_ptr_process_record(struct hil_ptr *ptr)
                 if (absdev) {
                         val = lo + (hi<<8);
 #ifdef TABLET_AUTOADJUST
-                        if (val < ptr->dev.absmin[ABS_X + i])
-                                ptr->dev.absmin[ABS_X + i] = val;
-                        if (val > ptr->dev.absmax[ABS_X + i])
-                                ptr->dev.absmax[ABS_X + i] = val;
+                        if (val < dev->absmin[ABS_X + i])
+                                dev->absmin[ABS_X + i] = val;
+                        if (val > dev->absmax[ABS_X + i])
+                                dev->absmax[ABS_X + i] = val;
 #endif
-                        if (i%3) val = ptr->dev.absmax[ABS_X + i] - val;
+                        if (i%3) val = dev->absmax[ABS_X + i] - val;
                         input_report_abs(dev, ABS_X + i, val);
                 } else {
                         val = (int) (((int8_t)lo) | ((int8_t)hi<<8));
@@ -233,26 +233,30 @@ static void hil_ptr_disconnect(struct serio *serio)
                 return;
         }
 
-        input_unregister_device(&ptr->dev);
+        input_unregister_device(ptr->dev);
         serio_close(serio);
+        input_free_device(ptr->dev);
         kfree(ptr);
 }
 
 static int hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
 {
-        struct hil_ptr  *ptr;
-        char            *txt;
-        unsigned int    i, naxsets, btntype;
-        uint8_t         did, *idd;
+        struct hil_ptr   *ptr;
+        char             *txt;
+        unsigned int     i, naxsets, btntype;
+        uint8_t          did, *idd;
 
-        if (!(ptr = kmalloc(sizeof(struct hil_ptr), GFP_KERNEL))) return -ENOMEM;
-        memset(ptr, 0, sizeof(struct hil_ptr));
+        if (!(ptr = kzalloc(sizeof(struct hil_ptr), GFP_KERNEL)))
+                return -ENOMEM;
 
-        if (serio_open(serio, driver)) goto bail0;
+        ptr->dev = input_allocate_device();
+        if (!ptr->dev) goto bail0;
+        ptr->dev->private = ptr;
+
+        if (serio_open(serio, driver)) goto bail1;
 
         serio_set_drvdata(serio, ptr);
         ptr->serio = serio;
-        ptr->dev.private = ptr;
 
         init_MUTEX_LOCKED(&(ptr->sem));
 
@@ -283,25 +287,24 @@ static int hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
 
         up(&(ptr->sem));
 
-        init_input_dev(&ptr->dev);
         did = ptr->idd[0];
         idd = ptr->idd + 1;
         txt = "unknown";
         if ((did & HIL_IDD_DID_TYPE_MASK) == HIL_IDD_DID_TYPE_REL) {
-                ptr->dev.evbit[0] = BIT(EV_REL);
+                ptr->dev->evbit[0] = BIT(EV_REL);
                 txt = "relative";
         }
 
         if ((did & HIL_IDD_DID_TYPE_MASK) == HIL_IDD_DID_TYPE_ABS) {
-                ptr->dev.evbit[0] = BIT(EV_ABS);
+                ptr->dev->evbit[0] = BIT(EV_ABS);
                 txt = "absolute";
         }
-        if (!ptr->dev.evbit[0]) {
-                goto bail1;
+        if (!ptr->dev->evbit[0]) {
+                goto bail2;
         }
 
         ptr->nbtn = HIL_IDD_NUM_BUTTONS(idd);
-        if (ptr->nbtn) ptr->dev.evbit[0] |= BIT(EV_KEY);
+        if (ptr->nbtn) ptr->dev->evbit[0] |= BIT(EV_KEY);
 
         naxsets = HIL_IDD_NUM_AXSETS(*idd);
         ptr->naxes = HIL_IDD_NUM_AXES_PER_SET(*idd);
@@ -325,7 +328,7 @@ static int hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
                 btntype = BTN_MOUSE;
 
         for (i = 0; i < ptr->nbtn; i++) {
-                set_bit(btntype | i, ptr->dev.keybit);
+                set_bit(btntype | i, ptr->dev->keybit);
                 ptr->btnmap[i] = btntype | i;
         }
 
@@ -337,50 +340,52 @@ static int hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
 
         if ((did & HIL_IDD_DID_TYPE_MASK) == HIL_IDD_DID_TYPE_REL) {
                 for (i = 0; i < ptr->naxes; i++) {
-                        set_bit(REL_X + i, ptr->dev.relbit);
+                        set_bit(REL_X + i, ptr->dev->relbit);
                 }
                 for (i = 3; (i < ptr->naxes + 3) && (naxsets > 1); i++) {
-                        set_bit(REL_X + i, ptr->dev.relbit);
+                        set_bit(REL_X + i, ptr->dev->relbit);
                 }
         } else {
                 for (i = 0; i < ptr->naxes; i++) {
-                        set_bit(ABS_X + i, ptr->dev.absbit);
-                        ptr->dev.absmin[ABS_X + i] = 0;
-                        ptr->dev.absmax[ABS_X + i] = 
+                        set_bit(ABS_X + i, ptr->dev->absbit);
+                        ptr->dev->absmin[ABS_X + i] = 0;
+                        ptr->dev->absmax[ABS_X + i] =
                                 HIL_IDD_AXIS_MAX((ptr->idd + 1), i);
                 }
                 for (i = 3; (i < ptr->naxes + 3) && (naxsets > 1); i++) {
-                        set_bit(ABS_X + i, ptr->dev.absbit);
-                        ptr->dev.absmin[ABS_X + i] = 0;
-                        ptr->dev.absmax[ABS_X + i] = 
+                        set_bit(ABS_X + i, ptr->dev->absbit);
+                        ptr->dev->absmin[ABS_X + i] = 0;
+                        ptr->dev->absmax[ABS_X + i] =
                                 HIL_IDD_AXIS_MAX((ptr->idd + 1), (i - 3));
                 }
 #ifdef TABLET_AUTOADJUST
                 for (i = 0; i < ABS_MAX; i++) {
-                        int diff = ptr->dev.absmax[ABS_X + i] / 10;
-                        ptr->dev.absmin[ABS_X + i] += diff;
-                        ptr->dev.absmax[ABS_X + i] -= diff;
+                        int diff = ptr->dev->absmax[ABS_X + i] / 10;
+                        ptr->dev->absmin[ABS_X + i] += diff;
+                        ptr->dev->absmax[ABS_X + i] -= diff;
                 }
 #endif
         }
 
-        ptr->dev.name = strlen(ptr->rnm) ? ptr->rnm : HIL_GENERIC_NAME;
+        ptr->dev->name = strlen(ptr->rnm) ? ptr->rnm : HIL_GENERIC_NAME;
 
-        ptr->dev.id.bustype     = BUS_HIL;
-        ptr->dev.id.vendor      = PCI_VENDOR_ID_HP;
-        ptr->dev.id.product     = 0x0001; /* TODO: get from ptr->rsc */
-        ptr->dev.id.version     = 0x0100; /* TODO: get from ptr->rsc */
-        ptr->dev.dev            = &serio->dev;
+        ptr->dev->id.bustype    = BUS_HIL;
+        ptr->dev->id.vendor     = PCI_VENDOR_ID_HP;
+        ptr->dev->id.product    = 0x0001; /* TODO: get from ptr->rsc */
+        ptr->dev->id.version    = 0x0100; /* TODO: get from ptr->rsc */
+        ptr->dev->dev           = &serio->dev;
 
-        input_register_device(&ptr->dev);
+        input_register_device(ptr->dev);
         printk(KERN_INFO "input: %s (%s), ID: %d\n",
-                ptr->dev.name, 
+                ptr->dev->name,
                 (btntype == BTN_MOUSE) ? "HIL mouse":"HIL tablet or touchpad",
                 did);
 
         return 0;
- bail1:
+ bail2:
         serio_close(serio);
+ bail1:
+        input_free_device(ptr->dev);
  bail0:
         kfree(ptr);
         serio_set_drvdata(serio, NULL);