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path: root/drivers/char/n_r3964.c
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Diffstat (limited to 'drivers/char/n_r3964.c')
-rw-r--r--drivers/char/n_r3964.c14
1 files changed, 2 insertions, 12 deletions
diff --git a/drivers/char/n_r3964.c b/drivers/char/n_r3964.c
index 14557a4822c..6b918b80f73 100644
--- a/drivers/char/n_r3964.c
+++ b/drivers/char/n_r3964.c
@@ -1071,8 +1071,6 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
struct r3964_client_info *pClient;
struct r3964_message *pMsg;
struct r3964_client_message theMsg;
- DECLARE_WAITQUEUE(wait, current);
-
int count;
TRACE_L("read()");
@@ -1086,16 +1084,8 @@ static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
return -EAGAIN;
}
/* block until there is a message: */
- add_wait_queue(&pInfo->read_wait, &wait);
-repeat:
- __set_current_state(TASK_INTERRUPTIBLE);
- pMsg = remove_msg(pInfo, pClient);
- if (!pMsg && !signal_pending(current)) {
- schedule();
- goto repeat;
- }
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&pInfo->read_wait, &wait);
+ wait_event_interruptible(pInfo->read_wait,
+ (pMsg = remove_msg(pInfo, pClient)));
}
/* If we still haven't got a message, we must have been signalled */