#include "input-compat.h"
struct evdev {
- int exist;
int open;
int minor;
struct input_handle handle;
spinlock_t client_lock; /* protects client_list */
struct mutex mutex;
struct device dev;
+ bool exist;
};
struct evdev_client {
{
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
+ unsigned int mask;
poll_wait(file, &evdev->wait, wait);
- return ((client->head == client->tail) ? 0 : (POLLIN | POLLRDNORM)) |
- (evdev->exist ? 0 : (POLLHUP | POLLERR));
+
+ mask = evdev->exist ? POLLOUT | POLLWRNORM : POLLHUP | POLLERR;
+ if (client->head != client->tail)
+ mask |= POLLIN | POLLRDNORM;
+
+ return mask;
}
#ifdef CONFIG_COMPAT
static void evdev_mark_dead(struct evdev *evdev)
{
mutex_lock(&evdev->mutex);
- evdev->exist = 0;
+ evdev->exist = false;
mutex_unlock(&evdev->mutex);
}
init_waitqueue_head(&evdev->wait);
dev_set_name(&evdev->dev, "event%d", minor);
- evdev->exist = 1;
+ evdev->exist = true;
evdev->minor = minor;
evdev->handle.dev = input_get_device(dev);