diff options
| -rw-r--r-- | drivers/tty/serdev/core.c | 20 | ||||
| -rw-r--r-- | include/linux/serdev.h | 2 |
2 files changed, 15 insertions, 7 deletions
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c index ee4c40336633..c7006bbb793a 100644 --- a/drivers/tty/serdev/core.c +++ b/drivers/tty/serdev/core.c @@ -231,7 +231,7 @@ EXPORT_SYMBOL_GPL(serdev_device_write_buf); int serdev_device_write(struct serdev_device *serdev, const unsigned char *buf, size_t count, - unsigned long timeout) + long timeout) { struct serdev_controller *ctrl = serdev->ctrl; int written = 0; @@ -254,16 +254,24 @@ int serdev_device_write(struct serdev_device *serdev, written += ret; buf += ret; count -= ret; - } while (count && - (timeout = wait_for_completion_timeout(&serdev->write_comp, - timeout))); + + if (count == 0) + break; + + timeout = wait_for_completion_interruptible_timeout(&serdev->write_comp, + timeout); + } while (timeout > 0); mutex_unlock(&serdev->write_lock); if (ret < 0) return ret; - if (timeout == 0 && written == 0) - return -ETIMEDOUT; + if (timeout <= 0 && written == 0) { + if (timeout == -ERESTARTSYS) + return -ERESTARTSYS; + else + return -ETIMEDOUT; + } return written; } diff --git a/include/linux/serdev.h b/include/linux/serdev.h index f153b2c7f0cd..070bf4e92df7 100644 --- a/include/linux/serdev.h +++ b/include/linux/serdev.h @@ -210,7 +210,7 @@ void serdev_device_wait_until_sent(struct serdev_device *, long); int serdev_device_get_tiocm(struct serdev_device *); int serdev_device_set_tiocm(struct serdev_device *, int, int); void serdev_device_write_wakeup(struct serdev_device *); -int serdev_device_write(struct serdev_device *, const unsigned char *, size_t, unsigned long); +int serdev_device_write(struct serdev_device *, const unsigned char *, size_t, long); void serdev_device_write_flush(struct serdev_device *); int serdev_device_write_room(struct serdev_device *); |