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@@ -63,7 +63,7 @@ struct mousedev {
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int minor;
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char name[16];
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wait_queue_head_t wait;
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- struct list_head list;
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+ struct list_head client_list;
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struct input_handle handle;
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struct mousedev_hw_data packet;
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@@ -85,7 +85,7 @@ struct mousedev_motion {
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};
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#define PACKET_QUEUE_LEN 16
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-struct mousedev_list {
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+struct mousedev_client {
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struct fasync_struct *fasync;
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struct mousedev *mousedev;
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struct list_head node;
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@@ -223,47 +223,47 @@ static void mousedev_key_event(struct mousedev *mousedev, unsigned int code, int
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static void mousedev_notify_readers(struct mousedev *mousedev, struct mousedev_hw_data *packet)
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{
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- struct mousedev_list *list;
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+ struct mousedev_client *client;
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struct mousedev_motion *p;
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unsigned long flags;
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int wake_readers = 0;
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- list_for_each_entry(list, &mousedev->list, node) {
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- spin_lock_irqsave(&list->packet_lock, flags);
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+ list_for_each_entry(client, &mousedev->client_list, node) {
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+ spin_lock_irqsave(&client->packet_lock, flags);
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- p = &list->packets[list->head];
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- if (list->ready && p->buttons != mousedev->packet.buttons) {
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- unsigned int new_head = (list->head + 1) % PACKET_QUEUE_LEN;
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- if (new_head != list->tail) {
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- p = &list->packets[list->head = new_head];
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+ p = &client->packets[client->head];
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+ if (client->ready && p->buttons != mousedev->packet.buttons) {
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+ unsigned int new_head = (client->head + 1) % PACKET_QUEUE_LEN;
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+ if (new_head != client->tail) {
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+ p = &client->packets[client->head = new_head];
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memset(p, 0, sizeof(struct mousedev_motion));
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}
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}
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if (packet->abs_event) {
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- p->dx += packet->x - list->pos_x;
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- p->dy += packet->y - list->pos_y;
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- list->pos_x = packet->x;
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- list->pos_y = packet->y;
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+ p->dx += packet->x - client->pos_x;
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+ p->dy += packet->y - client->pos_y;
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+ client->pos_x = packet->x;
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+ client->pos_y = packet->y;
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}
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- list->pos_x += packet->dx;
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- list->pos_x = list->pos_x < 0 ? 0 : (list->pos_x >= xres ? xres : list->pos_x);
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- list->pos_y += packet->dy;
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- list->pos_y = list->pos_y < 0 ? 0 : (list->pos_y >= yres ? yres : list->pos_y);
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+ client->pos_x += packet->dx;
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+ client->pos_x = client->pos_x < 0 ? 0 : (client->pos_x >= xres ? xres : client->pos_x);
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+ client->pos_y += packet->dy;
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+ client->pos_y = client->pos_y < 0 ? 0 : (client->pos_y >= yres ? yres : client->pos_y);
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p->dx += packet->dx;
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p->dy += packet->dy;
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p->dz += packet->dz;
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p->buttons = mousedev->packet.buttons;
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- if (p->dx || p->dy || p->dz || p->buttons != list->last_buttons)
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- list->ready = 1;
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+ if (p->dx || p->dy || p->dz || p->buttons != client->last_buttons)
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+ client->ready = 1;
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- spin_unlock_irqrestore(&list->packet_lock, flags);
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+ spin_unlock_irqrestore(&client->packet_lock, flags);
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- if (list->ready) {
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- kill_fasync(&list->fasync, SIGIO, POLL_IN);
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+ if (client->ready) {
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+ kill_fasync(&client->fasync, SIGIO, POLL_IN);
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wake_readers = 1;
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}
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}
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@@ -351,9 +351,9 @@ static void mousedev_event(struct input_handle *handle, unsigned int type, unsig
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static int mousedev_fasync(int fd, struct file *file, int on)
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{
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int retval;
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- struct mousedev_list *list = file->private_data;
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+ struct mousedev_client *client = file->private_data;
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- retval = fasync_helper(fd, file, on, &list->fasync);
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+ retval = fasync_helper(fd, file, on, &client->fasync);
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return retval < 0 ? retval : 0;
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}
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@@ -380,32 +380,33 @@ static void mixdev_release(void)
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}
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}
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-static int mousedev_release(struct inode * inode, struct file * file)
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+static int mousedev_release(struct inode *inode, struct file *file)
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{
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- struct mousedev_list *list = file->private_data;
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+ struct mousedev_client *client = file->private_data;
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+ struct mousedev *mousedev = client->mousedev;
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mousedev_fasync(-1, file, 0);
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- list_del(&list->node);
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+ list_del(&client->node);
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+ kfree(client);
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- if (!--list->mousedev->open) {
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- if (list->mousedev->minor == MOUSEDEV_MIX)
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+ if (!--mousedev->open) {
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+ if (mousedev->minor == MOUSEDEV_MIX)
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mixdev_release();
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else if (!mousedev_mix.open) {
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- if (list->mousedev->exist)
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- input_close_device(&list->mousedev->handle);
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+ if (mousedev->exist)
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+ input_close_device(&mousedev->handle);
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else
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- mousedev_free(list->mousedev);
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+ mousedev_free(mousedev);
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}
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}
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- kfree(list);
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return 0;
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}
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-static int mousedev_open(struct inode * inode, struct file * file)
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+static int mousedev_open(struct inode *inode, struct file *file)
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{
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- struct mousedev_list *list;
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+ struct mousedev_client *client;
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struct input_handle *handle;
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struct mousedev *mousedev;
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int i;
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@@ -417,31 +418,36 @@ static int mousedev_open(struct inode * inode, struct file * file)
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#endif
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i = iminor(inode) - MOUSEDEV_MINOR_BASE;
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- if (i >= MOUSEDEV_MINORS || !mousedev_table[i])
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+ if (i >= MOUSEDEV_MINORS)
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+ return -ENODEV;
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+
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+ mousedev = mousedev_table[i];
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+ if (!mousedev)
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return -ENODEV;
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- if (!(list = kzalloc(sizeof(struct mousedev_list), GFP_KERNEL)))
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+ client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL);
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+ if (!client)
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return -ENOMEM;
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- spin_lock_init(&list->packet_lock);
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- list->pos_x = xres / 2;
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- list->pos_y = yres / 2;
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- list->mousedev = mousedev_table[i];
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- list_add_tail(&list->node, &mousedev_table[i]->list);
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- file->private_data = list;
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+ spin_lock_init(&client->packet_lock);
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+ client->pos_x = xres / 2;
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+ client->pos_y = yres / 2;
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+ client->mousedev = mousedev;
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+ list_add_tail(&client->node, &mousedev->client_list);
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- if (!list->mousedev->open++) {
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- if (list->mousedev->minor == MOUSEDEV_MIX) {
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+ if (!mousedev->open++) {
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+ if (mousedev->minor == MOUSEDEV_MIX) {
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list_for_each_entry(handle, &mousedev_handler.h_list, h_node) {
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- mousedev = handle->private;
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- if (!mousedev->open && mousedev->exist)
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+ struct mousedev *md = handle->private;
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+ if (!md->open && md->exist)
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input_open_device(handle);
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}
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} else
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- if (!mousedev_mix.open && list->mousedev->exist)
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- input_open_device(&list->mousedev->handle);
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+ if (!mousedev_mix.open && mousedev->exist)
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+ input_open_device(&mousedev->handle);
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}
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+ file->private_data = client;
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return 0;
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}
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@@ -450,13 +456,13 @@ static inline int mousedev_limit_delta(int delta, int limit)
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return delta > limit ? limit : (delta < -limit ? -limit : delta);
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}
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-static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data)
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+static void mousedev_packet(struct mousedev_client *client, signed char *ps2_data)
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{
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struct mousedev_motion *p;
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unsigned long flags;
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- spin_lock_irqsave(&list->packet_lock, flags);
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- p = &list->packets[list->tail];
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+ spin_lock_irqsave(&client->packet_lock, flags);
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+ p = &client->packets[client->tail];
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ps2_data[0] = 0x08 | ((p->dx < 0) << 4) | ((p->dy < 0) << 5) | (p->buttons & 0x07);
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ps2_data[1] = mousedev_limit_delta(p->dx, 127);
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@@ -464,44 +470,44 @@ static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data)
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p->dx -= ps2_data[1];
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p->dy -= ps2_data[2];
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- switch (list->mode) {
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+ switch (client->mode) {
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case MOUSEDEV_EMUL_EXPS:
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ps2_data[3] = mousedev_limit_delta(p->dz, 7);
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p->dz -= ps2_data[3];
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ps2_data[3] = (ps2_data[3] & 0x0f) | ((p->buttons & 0x18) << 1);
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- list->bufsiz = 4;
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+ client->bufsiz = 4;
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break;
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case MOUSEDEV_EMUL_IMPS:
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ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
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ps2_data[3] = mousedev_limit_delta(p->dz, 127);
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p->dz -= ps2_data[3];
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- list->bufsiz = 4;
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+ client->bufsiz = 4;
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break;
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case MOUSEDEV_EMUL_PS2:
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default:
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ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
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p->dz = 0;
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- list->bufsiz = 3;
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+ client->bufsiz = 3;
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break;
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}
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if (!p->dx && !p->dy && !p->dz) {
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- if (list->tail == list->head) {
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- list->ready = 0;
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- list->last_buttons = p->buttons;
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+ if (client->tail == client->head) {
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+ client->ready = 0;
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+ client->last_buttons = p->buttons;
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} else
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- list->tail = (list->tail + 1) % PACKET_QUEUE_LEN;
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+ client->tail = (client->tail + 1) % PACKET_QUEUE_LEN;
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}
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- spin_unlock_irqrestore(&list->packet_lock, flags);
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+ spin_unlock_irqrestore(&client->packet_lock, flags);
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}
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-static ssize_t mousedev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
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+static ssize_t mousedev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
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{
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- struct mousedev_list *list = file->private_data;
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+ struct mousedev_client *client = file->private_data;
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unsigned char c;
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unsigned int i;
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@@ -510,95 +516,95 @@ static ssize_t mousedev_write(struct file * file, const char __user * buffer, si
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if (get_user(c, buffer + i))
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return -EFAULT;
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- if (c == mousedev_imex_seq[list->imexseq]) {
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- if (++list->imexseq == MOUSEDEV_SEQ_LEN) {
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- list->imexseq = 0;
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- list->mode = MOUSEDEV_EMUL_EXPS;
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+ if (c == mousedev_imex_seq[client->imexseq]) {
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+ if (++client->imexseq == MOUSEDEV_SEQ_LEN) {
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+ client->imexseq = 0;
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+ client->mode = MOUSEDEV_EMUL_EXPS;
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}
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} else
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- list->imexseq = 0;
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+ client->imexseq = 0;
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- if (c == mousedev_imps_seq[list->impsseq]) {
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- if (++list->impsseq == MOUSEDEV_SEQ_LEN) {
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- list->impsseq = 0;
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- list->mode = MOUSEDEV_EMUL_IMPS;
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+ if (c == mousedev_imps_seq[client->impsseq]) {
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+ if (++client->impsseq == MOUSEDEV_SEQ_LEN) {
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+ client->impsseq = 0;
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+ client->mode = MOUSEDEV_EMUL_IMPS;
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}
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} else
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- list->impsseq = 0;
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+ client->impsseq = 0;
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- list->ps2[0] = 0xfa;
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+ client->ps2[0] = 0xfa;
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switch (c) {
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case 0xeb: /* Poll */
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- mousedev_packet(list, &list->ps2[1]);
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- list->bufsiz++; /* account for leading ACK */
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+ mousedev_packet(client, &client->ps2[1]);
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+ client->bufsiz++; /* account for leading ACK */
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break;
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case 0xf2: /* Get ID */
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- switch (list->mode) {
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- case MOUSEDEV_EMUL_PS2: list->ps2[1] = 0; break;
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- case MOUSEDEV_EMUL_IMPS: list->ps2[1] = 3; break;
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- case MOUSEDEV_EMUL_EXPS: list->ps2[1] = 4; break;
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+ switch (client->mode) {
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+ case MOUSEDEV_EMUL_PS2: client->ps2[1] = 0; break;
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+ case MOUSEDEV_EMUL_IMPS: client->ps2[1] = 3; break;
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+ case MOUSEDEV_EMUL_EXPS: client->ps2[1] = 4; break;
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}
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- list->bufsiz = 2;
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+ client->bufsiz = 2;
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break;
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case 0xe9: /* Get info */
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- list->ps2[1] = 0x60; list->ps2[2] = 3; list->ps2[3] = 200;
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- list->bufsiz = 4;
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+ client->ps2[1] = 0x60; client->ps2[2] = 3; client->ps2[3] = 200;
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+ client->bufsiz = 4;
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break;
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case 0xff: /* Reset */
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- list->impsseq = list->imexseq = 0;
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- list->mode = MOUSEDEV_EMUL_PS2;
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- list->ps2[1] = 0xaa; list->ps2[2] = 0x00;
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- list->bufsiz = 3;
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+ client->impsseq = client->imexseq = 0;
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+ client->mode = MOUSEDEV_EMUL_PS2;
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+ client->ps2[1] = 0xaa; client->ps2[2] = 0x00;
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+ client->bufsiz = 3;
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break;
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default:
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- list->bufsiz = 1;
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+ client->bufsiz = 1;
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break;
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}
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- list->buffer = list->bufsiz;
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+ client->buffer = client->bufsiz;
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}
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- kill_fasync(&list->fasync, SIGIO, POLL_IN);
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+ kill_fasync(&client->fasync, SIGIO, POLL_IN);
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- wake_up_interruptible(&list->mousedev->wait);
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+ wake_up_interruptible(&client->mousedev->wait);
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return count;
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}
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-static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t count, loff_t *ppos)
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+static ssize_t mousedev_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
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{
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- struct mousedev_list *list = file->private_data;
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+ struct mousedev_client *client = file->private_data;
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int retval = 0;
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- if (!list->ready && !list->buffer && (file->f_flags & O_NONBLOCK))
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+ if (!client->ready && !client->buffer && (file->f_flags & O_NONBLOCK))
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return -EAGAIN;
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- retval = wait_event_interruptible(list->mousedev->wait,
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- !list->mousedev->exist || list->ready || list->buffer);
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+ retval = wait_event_interruptible(client->mousedev->wait,
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+ !client->mousedev->exist || client->ready || client->buffer);
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if (retval)
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|
return retval;
|
|
|
|
|
|
- if (!list->mousedev->exist)
|
|
|
+ if (!client->mousedev->exist)
|
|
|
return -ENODEV;
|
|
|
|
|
|
- if (!list->buffer && list->ready) {
|
|
|
- mousedev_packet(list, list->ps2);
|
|
|
- list->buffer = list->bufsiz;
|
|
|
+ if (!client->buffer && client->ready) {
|
|
|
+ mousedev_packet(client, client->ps2);
|
|
|
+ client->buffer = client->bufsiz;
|
|
|
}
|
|
|
|
|
|
- if (count > list->buffer)
|
|
|
- count = list->buffer;
|
|
|
+ if (count > client->buffer)
|
|
|
+ count = client->buffer;
|
|
|
|
|
|
- list->buffer -= count;
|
|
|
+ client->buffer -= count;
|
|
|
|
|
|
- if (copy_to_user(buffer, list->ps2 + list->bufsiz - list->buffer - count, count))
|
|
|
+ if (copy_to_user(buffer, client->ps2 + client->bufsiz - client->buffer - count, count))
|
|
|
return -EFAULT;
|
|
|
|
|
|
return count;
|
|
@@ -607,11 +613,12 @@ static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t co
|
|
|
/* No kernel lock - fine */
|
|
|
static unsigned int mousedev_poll(struct file *file, poll_table *wait)
|
|
|
{
|
|
|
- struct mousedev_list *list = file->private_data;
|
|
|
+ struct mousedev_client *client = file->private_data;
|
|
|
+ struct mousedev *mousedev = client->mousedev;
|
|
|
|
|
|
- poll_wait(file, &list->mousedev->wait, wait);
|
|
|
- return ((list->ready || list->buffer) ? (POLLIN | POLLRDNORM) : 0) |
|
|
|
- (list->mousedev->exist ? 0 : (POLLHUP | POLLERR));
|
|
|
+ poll_wait(file, &mousedev->wait, wait);
|
|
|
+ return ((client->ready || client->buffer) ? (POLLIN | POLLRDNORM) : 0) |
|
|
|
+ (mousedev->exist ? 0 : (POLLHUP | POLLERR));
|
|
|
}
|
|
|
|
|
|
static const struct file_operations mousedev_fops = {
|
|
@@ -643,7 +650,7 @@ static int mousedev_connect(struct input_handler *handler, struct input_dev *dev
|
|
|
if (!mousedev)
|
|
|
return -ENOMEM;
|
|
|
|
|
|
- INIT_LIST_HEAD(&mousedev->list);
|
|
|
+ INIT_LIST_HEAD(&mousedev->client_list);
|
|
|
INIT_LIST_HEAD(&mousedev->mixdev_node);
|
|
|
init_waitqueue_head(&mousedev->wait);
|
|
|
|
|
@@ -699,7 +706,7 @@ static int mousedev_connect(struct input_handler *handler, struct input_dev *dev
|
|
|
static void mousedev_disconnect(struct input_handle *handle)
|
|
|
{
|
|
|
struct mousedev *mousedev = handle->private;
|
|
|
- struct mousedev_list *list;
|
|
|
+ struct mousedev_client *client;
|
|
|
|
|
|
input_unregister_handle(handle);
|
|
|
|
|
@@ -711,8 +718,8 @@ static void mousedev_disconnect(struct input_handle *handle)
|
|
|
if (mousedev->open) {
|
|
|
input_close_device(handle);
|
|
|
wake_up_interruptible(&mousedev->wait);
|
|
|
- list_for_each_entry(list, &mousedev->list, node)
|
|
|
- kill_fasync(&list->fasync, SIGIO, POLL_HUP);
|
|
|
+ list_for_each_entry(client, &mousedev->client_list, node)
|
|
|
+ kill_fasync(&client->fasync, SIGIO, POLL_HUP);
|
|
|
} else {
|
|
|
if (mousedev_mix.open)
|
|
|
input_close_device(handle);
|
|
@@ -745,7 +752,7 @@ static const struct input_device_id mousedev_ids[] = {
|
|
|
.absbit = { BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_TOOL_WIDTH) },
|
|
|
}, /* A touchpad */
|
|
|
|
|
|
- { }, /* Terminating entry */
|
|
|
+ { }, /* Terminating entry */
|
|
|
};
|
|
|
|
|
|
MODULE_DEVICE_TABLE(input, mousedev_ids);
|
|
@@ -777,7 +784,7 @@ static int __init mousedev_init(void)
|
|
|
return error;
|
|
|
|
|
|
memset(&mousedev_mix, 0, sizeof(struct mousedev));
|
|
|
- INIT_LIST_HEAD(&mousedev_mix.list);
|
|
|
+ INIT_LIST_HEAD(&mousedev_mix.client_list);
|
|
|
init_waitqueue_head(&mousedev_mix.wait);
|
|
|
mousedev_table[MOUSEDEV_MIX] = &mousedev_mix;
|
|
|
mousedev_mix.exist = 1;
|