#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/input.h>
-#include <linux/config.h>
#include <linux/smp_lock.h>
#include <linux/random.h>
#include <linux/major.h>
if (mousedev->touch) {
size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
- if (size == 0) size = 256 * 2;
+ if (size == 0)
+ size = 256 * 2;
+
switch (code) {
case ABS_X:
fx(0) = value;
switch (code) {
case ABS_X:
size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
- if (size == 0) size = xres ? : 1;
- if (value > dev->absmax[ABS_X]) value = dev->absmax[ABS_X];
- if (value < dev->absmin[ABS_X]) value = dev->absmin[ABS_X];
+ if (size == 0)
+ size = xres ? : 1;
+ if (value > dev->absmax[ABS_X])
+ value = dev->absmax[ABS_X];
+ if (value < dev->absmin[ABS_X])
+ value = dev->absmin[ABS_X];
mousedev->packet.x = ((value - dev->absmin[ABS_X]) * xres) / size;
mousedev->packet.abs_event = 1;
break;
case ABS_Y:
size = dev->absmax[ABS_Y] - dev->absmin[ABS_Y];
- if (size == 0) size = yres ? : 1;
- if (value > dev->absmax[ABS_Y]) value = dev->absmax[ABS_Y];
- if (value < dev->absmin[ABS_Y]) value = dev->absmin[ABS_Y];
+ if (size == 0)
+ size = yres ? : 1;
+ if (value > dev->absmax[ABS_Y])
+ value = dev->absmax[ABS_Y];
+ if (value < dev->absmin[ABS_Y])
+ value = dev->absmin[ABS_Y];
mousedev->packet.y = yres - ((value - dev->absmin[ABS_Y]) * yres) / size;
mousedev->packet.abs_event = 1;
break;
switch (code) {
case BTN_TOUCH:
case BTN_0:
- case BTN_FORWARD:
case BTN_LEFT: index = 0; break;
case BTN_STYLUS:
case BTN_1:
case BTN_RIGHT: index = 1; break;
case BTN_2:
+ case BTN_FORWARD:
case BTN_STYLUS2:
case BTN_MIDDLE: index = 2; break;
case BTN_3:
case BTN_SIDE: index = 3; break;
case BTN_4:
case BTN_EXTRA: index = 4; break;
- default: return;
+ default: return;
}
if (value) {
mousedev->touch = mousedev->pkt_count = 0;
mousedev->frac_dx = 0;
mousedev->frac_dy = 0;
- }
- else
- if (!mousedev->touch)
- mousedev->touch = jiffies;
+
+ } else if (!mousedev->touch)
+ mousedev->touch = jiffies;
}
static void mousedev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
mousedev->pkt_count++;
/* Input system eats duplicate events, but we need all of them
* to do correct averaging so apply present one forward
- */
+ */
fx(0) = fx(1);
fy(0) = fy(1);
}
{
int retval;
struct mousedev_list *list = file->private_data;
+
retval = fasync_helper(fd, file, on, &list->fasync);
+
return retval < 0 ? retval : 0;
}
if (i >= MOUSEDEV_MINORS || !mousedev_table[i])
return -ENODEV;
- if (!(list = kmalloc(sizeof(struct mousedev_list), GFP_KERNEL)))
+ if (!(list = kzalloc(sizeof(struct mousedev_list), GFP_KERNEL)))
return -ENOMEM;
- memset(list, 0, sizeof(struct mousedev_list));
spin_lock_init(&list->packet_lock);
list->pos_x = xres / 2;
list->imexseq = 0;
list->mode = MOUSEDEV_EMUL_EXPS;
}
- } else list->imexseq = 0;
+ } else
+ list->imexseq = 0;
if (c == mousedev_imps_seq[list->impsseq]) {
if (++list->impsseq == MOUSEDEV_SEQ_LEN) {
list->impsseq = 0;
list->mode = MOUSEDEV_EMUL_IMPS;
}
- } else list->impsseq = 0;
+ } else
+ list->impsseq = 0;
list->ps2[0] = 0xfa;
static unsigned int mousedev_poll(struct file *file, poll_table *wait)
{
struct mousedev_list *list = file->private_data;
+
poll_wait(file, &list->mousedev->wait, wait);
return ((list->ready || list->buffer) ? (POLLIN | POLLRDNORM) : 0) |
(list->mousedev->exist ? 0 : (POLLHUP | POLLERR));
}
-static struct file_operations mousedev_fops = {
+static const struct file_operations mousedev_fops = {
.owner = THIS_MODULE,
.read = mousedev_read,
.write = mousedev_write,
.fasync = mousedev_fasync,
};
-static struct input_handle *mousedev_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id)
+static struct input_handle *mousedev_connect(struct input_handler *handler, struct input_dev *dev,
+ const struct input_device_id *id)
{
struct mousedev *mousedev;
struct class_device *cdev;
return NULL;
}
- if (!(mousedev = kmalloc(sizeof(struct mousedev), GFP_KERNEL)))
+ if (!(mousedev = kzalloc(sizeof(struct mousedev), GFP_KERNEL)))
return NULL;
- memset(mousedev, 0, sizeof(struct mousedev));
INIT_LIST_HEAD(&mousedev->list);
init_waitqueue_head(&mousedev->wait);
}
}
-static struct input_device_id mousedev_ids[] = {
+static const struct input_device_id mousedev_ids[] = {
{
.flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_RELBIT,
.evbit = { BIT(EV_KEY) | BIT(EV_REL) },
static int __init mousedev_init(void)
{
- input_register_handler(&mousedev_handler);
+ struct class_device *cdev;
+ int error;
+
+ error = input_register_handler(&mousedev_handler);
+ if (error)
+ return error;
memset(&mousedev_mix, 0, sizeof(struct mousedev));
INIT_LIST_HEAD(&mousedev_mix.list);
mousedev_mix.exist = 1;
mousedev_mix.minor = MOUSEDEV_MIX;
- class_device_create(&input_class, NULL,
+ cdev = class_device_create(&input_class, NULL,
MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + MOUSEDEV_MIX), NULL, "mice");
+ if (IS_ERR(cdev)) {
+ input_unregister_handler(&mousedev_handler);
+ return PTR_ERR(cdev);
+ }
#ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
- if (!(psaux_registered = !misc_register(&psaux_mouse)))
- printk(KERN_WARNING "mice: could not misc_register the device\n");
+ error = misc_register(&psaux_mouse);
+ if (error)
+ printk(KERN_WARNING "mice: could not register psaux device, "
+ "error: %d\n", error);
+ else
+ psaux_registered = 1;
#endif
printk(KERN_INFO "mice: PS/2 mouse device common for all mice\n");