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@@ -18,9 +18,11 @@
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#include <linux/random.h>
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#include <linux/major.h>
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#include <linux/proc_fs.h>
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+#include <linux/seq_file.h>
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#include <linux/interrupt.h>
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#include <linux/poll.h>
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#include <linux/device.h>
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+#include <linux/mutex.h>
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
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MODULE_DESCRIPTION("Input core");
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@@ -224,7 +226,7 @@ int input_open_device(struct input_handle *handle)
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struct input_dev *dev = handle->dev;
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int err;
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- err = down_interruptible(&dev->sem);
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+ err = mutex_lock_interruptible(&dev->mutex);
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if (err)
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return err;
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@@ -236,7 +238,7 @@ int input_open_device(struct input_handle *handle)
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if (err)
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handle->open--;
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- up(&dev->sem);
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+ mutex_unlock(&dev->mutex);
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return err;
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}
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@@ -255,13 +257,13 @@ void input_close_device(struct input_handle *handle)
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input_release_device(handle);
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- down(&dev->sem);
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+ mutex_lock(&dev->mutex);
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if (!--dev->users && dev->close)
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dev->close(dev);
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handle->open--;
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- up(&dev->sem);
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+ mutex_unlock(&dev->mutex);
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}
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static void input_link_handle(struct input_handle *handle)
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@@ -315,21 +317,6 @@ static struct input_device_id *input_match_device(struct input_device_id *id, st
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return NULL;
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}
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-static int input_print_bitmap(char *buf, int buf_size, unsigned long *bitmap, int max)
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-{
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- int i;
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- int len = 0;
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-
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- for (i = NBITS(max) - 1; i > 0; i--)
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- if (bitmap[i])
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- break;
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-
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- for (; i >= 0; i--)
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- len += snprintf(buf + len, max(buf_size - len, 0),
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- "%lx%s", bitmap[i], i > 0 ? " " : "");
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- return len;
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-}
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-
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#ifdef CONFIG_PROC_FS
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static struct proc_dir_entry *proc_bus_input_dir;
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@@ -342,7 +329,7 @@ static inline void input_wakeup_procfs_readers(void)
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wake_up(&input_devices_poll_wait);
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}
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-static unsigned int input_devices_poll(struct file *file, poll_table *wait)
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+static unsigned int input_proc_devices_poll(struct file *file, poll_table *wait)
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{
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int state = input_devices_state;
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poll_wait(file, &input_devices_poll_wait, wait);
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@@ -351,115 +338,171 @@ static unsigned int input_devices_poll(struct file *file, poll_table *wait)
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return 0;
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}
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-#define SPRINTF_BIT(ev, bm) \
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- do { \
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- len += sprintf(buf + len, "B: %s=", #ev); \
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- len += input_print_bitmap(buf + len, INT_MAX, \
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- dev->bm##bit, ev##_MAX); \
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- len += sprintf(buf + len, "\n"); \
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- } while (0)
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+static struct list_head *list_get_nth_element(struct list_head *list, loff_t *pos)
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+{
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+ struct list_head *node;
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+ loff_t i = 0;
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-#define TEST_AND_SPRINTF_BIT(ev, bm) \
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- do { \
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- if (test_bit(EV_##ev, dev->evbit)) \
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- SPRINTF_BIT(ev, bm); \
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- } while (0)
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+ list_for_each(node, list)
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+ if (i++ == *pos)
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+ return node;
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+
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+ return NULL;
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+}
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-static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
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+static struct list_head *list_get_next_element(struct list_head *list, struct list_head *element, loff_t *pos)
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{
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- struct input_dev *dev;
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- struct input_handle *handle;
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- const char *path;
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+ if (element->next == list)
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+ return NULL;
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+
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+ ++(*pos);
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+ return element->next;
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+}
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+
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+static void *input_devices_seq_start(struct seq_file *seq, loff_t *pos)
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+{
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+ /* acquire lock here ... Yes, we do need locking, I knowi, I know... */
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+
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+ return list_get_nth_element(&input_dev_list, pos);
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+}
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- off_t at = 0;
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- int len, cnt = 0;
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+static void *input_devices_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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+{
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+ return list_get_next_element(&input_dev_list, v, pos);
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+}
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- list_for_each_entry(dev, &input_dev_list, node) {
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+static void input_devices_seq_stop(struct seq_file *seq, void *v)
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+{
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+ /* release lock here */
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+}
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- path = kobject_get_path(&dev->cdev.kobj, GFP_KERNEL);
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+static void input_seq_print_bitmap(struct seq_file *seq, const char *name,
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+ unsigned long *bitmap, int max)
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+{
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+ int i;
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- len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
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- dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
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+ for (i = NBITS(max) - 1; i > 0; i--)
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+ if (bitmap[i])
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+ break;
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- len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
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- len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
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- len += sprintf(buf + len, "S: Sysfs=%s\n", path ? path : "");
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- len += sprintf(buf + len, "H: Handlers=");
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+ seq_printf(seq, "B: %s=", name);
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+ for (; i >= 0; i--)
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+ seq_printf(seq, "%lx%s", bitmap[i], i > 0 ? " " : "");
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+ seq_putc(seq, '\n');
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+}
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- list_for_each_entry(handle, &dev->h_list, d_node)
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- len += sprintf(buf + len, "%s ", handle->name);
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-
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- len += sprintf(buf + len, "\n");
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-
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- SPRINTF_BIT(EV, ev);
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- TEST_AND_SPRINTF_BIT(KEY, key);
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- TEST_AND_SPRINTF_BIT(REL, rel);
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- TEST_AND_SPRINTF_BIT(ABS, abs);
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- TEST_AND_SPRINTF_BIT(MSC, msc);
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- TEST_AND_SPRINTF_BIT(LED, led);
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- TEST_AND_SPRINTF_BIT(SND, snd);
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- TEST_AND_SPRINTF_BIT(FF, ff);
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- TEST_AND_SPRINTF_BIT(SW, sw);
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-
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- len += sprintf(buf + len, "\n");
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-
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- at += len;
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-
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- if (at >= pos) {
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- if (!*start) {
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- *start = buf + (pos - (at - len));
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- cnt = at - pos;
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- } else cnt += len;
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- buf += len;
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- if (cnt >= count)
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- break;
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- }
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+static int input_devices_seq_show(struct seq_file *seq, void *v)
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+{
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+ struct input_dev *dev = container_of(v, struct input_dev, node);
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+ const char *path = kobject_get_path(&dev->cdev.kobj, GFP_KERNEL);
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+ struct input_handle *handle;
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- kfree(path);
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- }
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+ seq_printf(seq, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
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+ dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
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- if (&dev->node == &input_dev_list)
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- *eof = 1;
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+ seq_printf(seq, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
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+ seq_printf(seq, "P: Phys=%s\n", dev->phys ? dev->phys : "");
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+ seq_printf(seq, "S: Sysfs=%s\n", path ? path : "");
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+ seq_printf(seq, "H: Handlers=");
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- return (count > cnt) ? cnt : count;
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+ list_for_each_entry(handle, &dev->h_list, d_node)
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+ seq_printf(seq, "%s ", handle->name);
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+ seq_putc(seq, '\n');
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+
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+ input_seq_print_bitmap(seq, "EV", dev->evbit, EV_MAX);
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+ if (test_bit(EV_KEY, dev->evbit))
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+ input_seq_print_bitmap(seq, "KEY", dev->keybit, KEY_MAX);
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+ if (test_bit(EV_REL, dev->evbit))
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+ input_seq_print_bitmap(seq, "REL", dev->relbit, REL_MAX);
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+ if (test_bit(EV_ABS, dev->evbit))
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+ input_seq_print_bitmap(seq, "ABS", dev->absbit, ABS_MAX);
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+ if (test_bit(EV_MSC, dev->evbit))
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+ input_seq_print_bitmap(seq, "MSC", dev->mscbit, MSC_MAX);
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+ if (test_bit(EV_LED, dev->evbit))
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+ input_seq_print_bitmap(seq, "LED", dev->ledbit, LED_MAX);
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+ if (test_bit(EV_SND, dev->evbit))
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+ input_seq_print_bitmap(seq, "SND", dev->sndbit, SND_MAX);
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+ if (test_bit(EV_FF, dev->evbit))
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+ input_seq_print_bitmap(seq, "FF", dev->ffbit, FF_MAX);
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+ if (test_bit(EV_SW, dev->evbit))
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+ input_seq_print_bitmap(seq, "SW", dev->swbit, SW_MAX);
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+
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+ seq_putc(seq, '\n');
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+
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+ kfree(path);
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+ return 0;
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}
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-static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
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+static struct seq_operations input_devices_seq_ops = {
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+ .start = input_devices_seq_start,
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+ .next = input_devices_seq_next,
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+ .stop = input_devices_seq_stop,
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+ .show = input_devices_seq_show,
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+};
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+
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+static int input_proc_devices_open(struct inode *inode, struct file *file)
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{
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- struct input_handler *handler;
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+ return seq_open(file, &input_devices_seq_ops);
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+}
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- off_t at = 0;
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- int len = 0, cnt = 0;
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- int i = 0;
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+static struct file_operations input_devices_fileops = {
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+ .owner = THIS_MODULE,
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+ .open = input_proc_devices_open,
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+ .poll = input_proc_devices_poll,
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+ .read = seq_read,
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+ .llseek = seq_lseek,
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+ .release = seq_release,
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+};
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- list_for_each_entry(handler, &input_handler_list, node) {
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+static void *input_handlers_seq_start(struct seq_file *seq, loff_t *pos)
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+{
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+ /* acquire lock here ... Yes, we do need locking, I knowi, I know... */
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+ seq->private = (void *)(unsigned long)*pos;
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+ return list_get_nth_element(&input_handler_list, pos);
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+}
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+
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+static void *input_handlers_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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+{
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+ seq->private = (void *)(unsigned long)(*pos + 1);
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+ return list_get_next_element(&input_handler_list, v, pos);
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+}
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- if (handler->fops)
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- len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
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- i++, handler->name, handler->minor);
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- else
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- len = sprintf(buf, "N: Number=%d Name=%s\n",
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- i++, handler->name);
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+static void input_handlers_seq_stop(struct seq_file *seq, void *v)
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+{
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+ /* release lock here */
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+}
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- at += len;
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+static int input_handlers_seq_show(struct seq_file *seq, void *v)
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+{
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+ struct input_handler *handler = container_of(v, struct input_handler, node);
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- if (at >= pos) {
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- if (!*start) {
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- *start = buf + (pos - (at - len));
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- cnt = at - pos;
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- } else cnt += len;
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- buf += len;
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- if (cnt >= count)
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- break;
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- }
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- }
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- if (&handler->node == &input_handler_list)
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- *eof = 1;
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+ seq_printf(seq, "N: Number=%ld Name=%s",
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+ (unsigned long)seq->private, handler->name);
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+ if (handler->fops)
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+ seq_printf(seq, " Minor=%d", handler->minor);
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+ seq_putc(seq, '\n');
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- return (count > cnt) ? cnt : count;
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+ return 0;
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}
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+static struct seq_operations input_handlers_seq_ops = {
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+ .start = input_handlers_seq_start,
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+ .next = input_handlers_seq_next,
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+ .stop = input_handlers_seq_stop,
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+ .show = input_handlers_seq_show,
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+};
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-static struct file_operations input_fileops;
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+static int input_proc_handlers_open(struct inode *inode, struct file *file)
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+{
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+ return seq_open(file, &input_handlers_seq_ops);
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+}
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+
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+static struct file_operations input_handlers_fileops = {
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+ .owner = THIS_MODULE,
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+ .open = input_proc_handlers_open,
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+ .read = seq_read,
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+ .llseek = seq_lseek,
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+ .release = seq_release,
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+};
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static int __init input_proc_init(void)
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{
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@@ -471,20 +514,19 @@ static int __init input_proc_init(void)
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proc_bus_input_dir->owner = THIS_MODULE;
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- entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
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+ entry = create_proc_entry("devices", 0, proc_bus_input_dir);
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if (!entry)
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goto fail1;
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entry->owner = THIS_MODULE;
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- input_fileops = *entry->proc_fops;
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- input_fileops.poll = input_devices_poll;
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- entry->proc_fops = &input_fileops;
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+ entry->proc_fops = &input_devices_fileops;
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- entry = create_proc_read_entry("handlers", 0, proc_bus_input_dir, input_handlers_read, NULL);
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+ entry = create_proc_entry("handlers", 0, proc_bus_input_dir);
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if (!entry)
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goto fail2;
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entry->owner = THIS_MODULE;
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+ entry->proc_fops = &input_handlers_fileops;
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return 0;
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@@ -512,13 +554,14 @@ static ssize_t input_dev_show_##name(struct class_device *dev, char *buf) \
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struct input_dev *input_dev = to_input_dev(dev); \
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int retval; \
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\
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- retval = down_interruptible(&input_dev->sem); \
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+ retval = mutex_lock_interruptible(&input_dev->mutex); \
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if (retval) \
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return retval; \
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\
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- retval = sprintf(buf, "%s\n", input_dev->name ? input_dev->name : ""); \
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+ retval = scnprintf(buf, PAGE_SIZE, \
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+ "%s\n", input_dev->name ? input_dev->name : ""); \
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\
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- up(&input_dev->sem); \
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+ mutex_unlock(&input_dev->mutex); \
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\
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return retval; \
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} \
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@@ -528,46 +571,51 @@ INPUT_DEV_STRING_ATTR_SHOW(name);
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INPUT_DEV_STRING_ATTR_SHOW(phys);
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INPUT_DEV_STRING_ATTR_SHOW(uniq);
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-static int print_modalias_bits(char *buf, int size, char prefix, unsigned long *arr,
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- unsigned int min, unsigned int max)
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+static int input_print_modalias_bits(char *buf, int size,
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+ char name, unsigned long *bm,
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+ unsigned int min_bit, unsigned int max_bit)
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{
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|
|
- int len, i;
|
|
|
+ int len = 0, i;
|
|
|
|
|
|
- len = snprintf(buf, size, "%c", prefix);
|
|
|
- for (i = min; i < max; i++)
|
|
|
- if (arr[LONG(i)] & BIT(i))
|
|
|
- len += snprintf(buf + len, size - len, "%X,", i);
|
|
|
+ len += snprintf(buf, max(size, 0), "%c", name);
|
|
|
+ for (i = min_bit; i < max_bit; i++)
|
|
|
+ if (bm[LONG(i)] & BIT(i))
|
|
|
+ len += snprintf(buf + len, max(size - len, 0), "%X,", i);
|
|
|
return len;
|
|
|
}
|
|
|
|
|
|
-static int print_modalias(char *buf, int size, struct input_dev *id)
|
|
|
+static int input_print_modalias(char *buf, int size, struct input_dev *id,
|
|
|
+ int add_cr)
|
|
|
{
|
|
|
int len;
|
|
|
|
|
|
- len = snprintf(buf, size, "input:b%04Xv%04Xp%04Xe%04X-",
|
|
|
- id->id.bustype,
|
|
|
- id->id.vendor,
|
|
|
- id->id.product,
|
|
|
- id->id.version);
|
|
|
-
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'e', id->evbit,
|
|
|
- 0, EV_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'k', id->keybit,
|
|
|
- KEY_MIN_INTERESTING, KEY_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'r', id->relbit,
|
|
|
- 0, REL_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'a', id->absbit,
|
|
|
- 0, ABS_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'm', id->mscbit,
|
|
|
- 0, MSC_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'l', id->ledbit,
|
|
|
- 0, LED_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 's', id->sndbit,
|
|
|
- 0, SND_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'f', id->ffbit,
|
|
|
- 0, FF_MAX);
|
|
|
- len += print_modalias_bits(buf + len, size - len, 'w', id->swbit,
|
|
|
- 0, SW_MAX);
|
|
|
+ len = snprintf(buf, max(size, 0),
|
|
|
+ "input:b%04Xv%04Xp%04Xe%04X-",
|
|
|
+ id->id.bustype, id->id.vendor,
|
|
|
+ id->id.product, id->id.version);
|
|
|
+
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'e', id->evbit, 0, EV_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'k', id->keybit, KEY_MIN_INTERESTING, KEY_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'r', id->relbit, 0, REL_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'a', id->absbit, 0, ABS_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'm', id->mscbit, 0, MSC_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'l', id->ledbit, 0, LED_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 's', id->sndbit, 0, SND_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'f', id->ffbit, 0, FF_MAX);
|
|
|
+ len += input_print_modalias_bits(buf + len, size - len,
|
|
|
+ 'w', id->swbit, 0, SW_MAX);
|
|
|
+
|
|
|
+ if (add_cr)
|
|
|
+ len += snprintf(buf + len, max(size - len, 0), "\n");
|
|
|
+
|
|
|
return len;
|
|
|
}
|
|
|
|
|
@@ -576,9 +624,9 @@ static ssize_t input_dev_show_modalias(struct class_device *dev, char *buf)
|
|
|
struct input_dev *id = to_input_dev(dev);
|
|
|
ssize_t len;
|
|
|
|
|
|
- len = print_modalias(buf, PAGE_SIZE, id);
|
|
|
- len += snprintf(buf + len, PAGE_SIZE-len, "\n");
|
|
|
- return len;
|
|
|
+ len = input_print_modalias(buf, PAGE_SIZE, id, 1);
|
|
|
+
|
|
|
+ return max_t(int, len, PAGE_SIZE);
|
|
|
}
|
|
|
static CLASS_DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
|
|
|
|
|
@@ -598,7 +646,7 @@ static struct attribute_group input_dev_attr_group = {
|
|
|
static ssize_t input_dev_show_id_##name(struct class_device *dev, char *buf) \
|
|
|
{ \
|
|
|
struct input_dev *input_dev = to_input_dev(dev); \
|
|
|
- return sprintf(buf, "%04x\n", input_dev->id.name); \
|
|
|
+ return scnprintf(buf, PAGE_SIZE, "%04x\n", input_dev->id.name); \
|
|
|
} \
|
|
|
static CLASS_DEVICE_ATTR(name, S_IRUGO, input_dev_show_id_##name, NULL);
|
|
|
|
|
@@ -620,11 +668,33 @@ static struct attribute_group input_dev_id_attr_group = {
|
|
|
.attrs = input_dev_id_attrs,
|
|
|
};
|
|
|
|
|
|
+static int input_print_bitmap(char *buf, int buf_size, unsigned long *bitmap,
|
|
|
+ int max, int add_cr)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ int len = 0;
|
|
|
+
|
|
|
+ for (i = NBITS(max) - 1; i > 0; i--)
|
|
|
+ if (bitmap[i])
|
|
|
+ break;
|
|
|
+
|
|
|
+ for (; i >= 0; i--)
|
|
|
+ len += snprintf(buf + len, max(buf_size - len, 0),
|
|
|
+ "%lx%s", bitmap[i], i > 0 ? " " : "");
|
|
|
+
|
|
|
+ if (add_cr)
|
|
|
+ len += snprintf(buf + len, max(buf_size - len, 0), "\n");
|
|
|
+
|
|
|
+ return len;
|
|
|
+}
|
|
|
+
|
|
|
#define INPUT_DEV_CAP_ATTR(ev, bm) \
|
|
|
static ssize_t input_dev_show_cap_##bm(struct class_device *dev, char *buf) \
|
|
|
{ \
|
|
|
struct input_dev *input_dev = to_input_dev(dev); \
|
|
|
- return input_print_bitmap(buf, PAGE_SIZE, input_dev->bm##bit, ev##_MAX);\
|
|
|
+ int len = input_print_bitmap(buf, PAGE_SIZE, \
|
|
|
+ input_dev->bm##bit, ev##_MAX, 1); \
|
|
|
+ return min_t(int, len, PAGE_SIZE); \
|
|
|
} \
|
|
|
static CLASS_DEVICE_ATTR(bm, S_IRUGO, input_dev_show_cap_##bm, NULL);
|
|
|
|
|
@@ -669,8 +739,8 @@ static void input_dev_release(struct class_device *class_dev)
|
|
|
* device bitfields.
|
|
|
*/
|
|
|
static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index,
|
|
|
- char *buffer, int buffer_size, int *cur_len,
|
|
|
- const char *name, unsigned long *bitmap, int max)
|
|
|
+ char *buffer, int buffer_size, int *cur_len,
|
|
|
+ const char *name, unsigned long *bitmap, int max)
|
|
|
{
|
|
|
if (*cur_index >= num_envp - 1)
|
|
|
return -ENOMEM;
|
|
@@ -678,12 +748,36 @@ static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index,
|
|
|
envp[*cur_index] = buffer + *cur_len;
|
|
|
|
|
|
*cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), name);
|
|
|
- if (*cur_len > buffer_size)
|
|
|
+ if (*cur_len >= buffer_size)
|
|
|
return -ENOMEM;
|
|
|
|
|
|
*cur_len += input_print_bitmap(buffer + *cur_len,
|
|
|
max(buffer_size - *cur_len, 0),
|
|
|
- bitmap, max) + 1;
|
|
|
+ bitmap, max, 0) + 1;
|
|
|
+ if (*cur_len > buffer_size)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ (*cur_index)++;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int input_add_uevent_modalias_var(char **envp, int num_envp, int *cur_index,
|
|
|
+ char *buffer, int buffer_size, int *cur_len,
|
|
|
+ struct input_dev *dev)
|
|
|
+{
|
|
|
+ if (*cur_index >= num_envp - 1)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ envp[*cur_index] = buffer + *cur_len;
|
|
|
+
|
|
|
+ *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0),
|
|
|
+ "MODALIAS=");
|
|
|
+ if (*cur_len >= buffer_size)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ *cur_len += input_print_modalias(buffer + *cur_len,
|
|
|
+ max(buffer_size - *cur_len, 0),
|
|
|
+ dev, 0) + 1;
|
|
|
if (*cur_len > buffer_size)
|
|
|
return -ENOMEM;
|
|
|
|
|
@@ -693,7 +787,7 @@ static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index,
|
|
|
|
|
|
#define INPUT_ADD_HOTPLUG_VAR(fmt, val...) \
|
|
|
do { \
|
|
|
- int err = add_uevent_var(envp, num_envp, &i, \
|
|
|
+ int err = add_uevent_var(envp, num_envp, &i, \
|
|
|
buffer, buffer_size, &len, \
|
|
|
fmt, val); \
|
|
|
if (err) \
|
|
@@ -709,6 +803,16 @@ static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index,
|
|
|
return err; \
|
|
|
} while (0)
|
|
|
|
|
|
+#define INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev) \
|
|
|
+ do { \
|
|
|
+ int err = input_add_uevent_modalias_var(envp, \
|
|
|
+ num_envp, &i, \
|
|
|
+ buffer, buffer_size, &len, \
|
|
|
+ dev); \
|
|
|
+ if (err) \
|
|
|
+ return err; \
|
|
|
+ } while (0)
|
|
|
+
|
|
|
static int input_dev_uevent(struct class_device *cdev, char **envp,
|
|
|
int num_envp, char *buffer, int buffer_size)
|
|
|
{
|
|
@@ -744,9 +848,7 @@ static int input_dev_uevent(struct class_device *cdev, char **envp,
|
|
|
if (test_bit(EV_SW, dev->evbit))
|
|
|
INPUT_ADD_HOTPLUG_BM_VAR("SW=", dev->swbit, SW_MAX);
|
|
|
|
|
|
- envp[i++] = buffer + len;
|
|
|
- len += snprintf(buffer + len, buffer_size - len, "MODALIAS=");
|
|
|
- len += print_modalias(buffer + len, buffer_size - len, dev) + 1;
|
|
|
+ INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev);
|
|
|
|
|
|
envp[i] = NULL;
|
|
|
return 0;
|
|
@@ -790,7 +892,7 @@ int input_register_device(struct input_dev *dev)
|
|
|
return -EINVAL;
|
|
|
}
|
|
|
|
|
|
- init_MUTEX(&dev->sem);
|
|
|
+ mutex_init(&dev->mutex);
|
|
|
set_bit(EV_SYN, dev->evbit);
|
|
|
|
|
|
/*
|