diff options
Diffstat (limited to 'drivers/misc/mei/wd.c')
| -rw-r--r-- | drivers/misc/mei/wd.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c index 13bb7a91ae12..e084adf27259 100644 --- a/drivers/misc/mei/wd.c +++ b/drivers/misc/mei/wd.c @@ -155,9 +155,11 @@ int mei_wd_send(struct mei_device *dev) * @dev: the device structure * @preserve: indicate if to keep the timeout value * - * returns 0 if success, - * -EIO when message send fails + * returns 0 if success + * on error: + * -EIO when message send fails * -EINVAL when invalid message is to be sent + * -ETIME on message timeout */ int mei_wd_stop(struct mei_device *dev) { @@ -173,12 +175,12 @@ int mei_wd_stop(struct mei_device *dev) ret = mei_cl_flow_ctrl_creds(&dev->wd_cl); if (ret < 0) - goto out; + goto err; if (ret && mei_hbuf_acquire(dev)) { ret = mei_wd_send(dev); if (ret) - goto out; + goto err; dev->wd_pending = false; } else { dev->wd_pending = true; @@ -186,21 +188,21 @@ int mei_wd_stop(struct mei_device *dev) mutex_unlock(&dev->device_lock); - ret = wait_event_interruptible_timeout(dev->wait_stop_wd, - dev->wd_state == MEI_WD_IDLE, - msecs_to_jiffies(MEI_WD_STOP_TIMEOUT)); + ret = wait_event_timeout(dev->wait_stop_wd, + dev->wd_state == MEI_WD_IDLE, + msecs_to_jiffies(MEI_WD_STOP_TIMEOUT)); mutex_lock(&dev->device_lock); - if (dev->wd_state == MEI_WD_IDLE) { - dev_dbg(&dev->pdev->dev, "wd: stop completed ret=%d.\n", ret); - ret = 0; - } else { - if (!ret) - ret = -ETIME; + if (dev->wd_state != MEI_WD_IDLE) { + /* timeout */ + ret = -ETIME; dev_warn(&dev->pdev->dev, "wd: stop failed to complete ret=%d.\n", ret); + goto err; } - -out: + dev_dbg(&dev->pdev->dev, "wd: stop completed after %u msec\n", + MEI_WD_STOP_TIMEOUT - jiffies_to_msecs(ret)); + return 0; +err: return ret; } |