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path: root/drivers/hid/hid-debug.c
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Diffstat (limited to 'drivers/hid/hid-debug.c')
-rw-r--r--drivers/hid/hid-debug.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index 7e56cb3855e3..8453214ec376 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -579,15 +579,16 @@ void hid_debug_event(struct hid_device *hdev, char *buf)
{
int i;
struct hid_debug_list *list;
+ unsigned long flags;
- mutex_lock(&hdev->debug_list_lock);
+ spin_lock_irqsave(&hdev->debug_list_lock, flags);
list_for_each_entry(list, &hdev->debug_list, node) {
for (i = 0; i < strlen(buf); i++)
list->hid_debug_buf[(list->tail + i) % HID_DEBUG_BUFSIZE] =
buf[i];
list->tail = (list->tail + i) % HID_DEBUG_BUFSIZE;
}
- mutex_unlock(&hdev->debug_list_lock);
+ spin_unlock_irqrestore(&hdev->debug_list_lock, flags);
wake_up_interruptible(&hdev->debug_wait);
}
@@ -977,6 +978,7 @@ static int hid_debug_events_open(struct inode *inode, struct file *file)
{
int err = 0;
struct hid_debug_list *list;
+ unsigned long flags;
if (!(list = kzalloc(sizeof(struct hid_debug_list), GFP_KERNEL))) {
err = -ENOMEM;
@@ -992,9 +994,9 @@ static int hid_debug_events_open(struct inode *inode, struct file *file)
file->private_data = list;
mutex_init(&list->read_mutex);
- mutex_lock(&list->hdev->debug_list_lock);
+ spin_lock_irqsave(&list->hdev->debug_list_lock, flags);
list_add_tail(&list->node, &list->hdev->debug_list);
- mutex_unlock(&list->hdev->debug_list_lock);
+ spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags);
out:
return err;
@@ -1088,10 +1090,11 @@ static unsigned int hid_debug_events_poll(struct file *file, poll_table *wait)
static int hid_debug_events_release(struct inode *inode, struct file *file)
{
struct hid_debug_list *list = file->private_data;
+ unsigned long flags;
- mutex_lock(&list->hdev->debug_list_lock);
+ spin_lock_irqsave(&list->hdev->debug_list_lock, flags);
list_del(&list->node);
- mutex_unlock(&list->hdev->debug_list_lock);
+ spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags);
kfree(list->hid_debug_buf);
kfree(list);