diff options
Diffstat (limited to 'drivers/watchdog/mei_wdt.c')
| -rw-r--r-- | drivers/watchdog/mei_wdt.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/watchdog/mei_wdt.c b/drivers/watchdog/mei_wdt.c index b93474e..630bd18 100644 --- a/drivers/watchdog/mei_wdt.c +++ b/drivers/watchdog/mei_wdt.c @@ -481,6 +481,21 @@ out: complete(&wdt->response); } +/* + * mei_wdt_notify_event - callback for event notification + * + * @cldev: bus device + */ +static void mei_wdt_notify_event(struct mei_cl_device *cldev) +{ + struct mei_wdt *wdt = mei_cldev_get_drvdata(cldev); + + if (wdt->state != MEI_WDT_NOT_REQUIRED) + return; + + mei_wdt_register(wdt); +} + /** * mei_wdt_event - callback for event receive * @@ -493,6 +508,9 @@ static void mei_wdt_event(struct mei_cl_device *cldev, { if (events & BIT(MEI_CL_EVENT_RX)) mei_wdt_event_rx(cldev); + + if (events & BIT(MEI_CL_EVENT_NOTIF)) + mei_wdt_notify_event(cldev); } #if IS_ENABLED(CONFIG_DEBUG_FS) @@ -605,9 +623,15 @@ static int mei_wdt_probe(struct mei_cl_device *cldev, goto err_out; } - ret = mei_cldev_register_event_cb(wdt->cldev, BIT(MEI_CL_EVENT_RX), + ret = mei_cldev_register_event_cb(wdt->cldev, + BIT(MEI_CL_EVENT_RX) | + BIT(MEI_CL_EVENT_NOTIF), mei_wdt_event, NULL); - if (ret) { + + /* on legacy devices notification is not supported + * this doesn't fail the registration for RX event + */ + if (ret && ret != -EOPNOTSUPP) { dev_err(&cldev->dev, "Could not register event ret=%d\n", ret); goto err_disable; } |