diff mbox series

[v2,02/16] watchdog: add error messages when initializing timeout fails

Message ID 20190416102515.12269-3-wsa+renesas@sang-engineering.com (mailing list archive)
State Accepted
Headers show
Series watchdog: refactor init_timeout and update users | expand

Commit Message

Wolfram Sang April 16, 2019, 10:25 a.m. UTC 
This not only removes boilerplate code from watchdog drivers, it can
also be more specific which of the supplied value actually fails. Also,
the loglevel becomes now consistent across drivers.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/watchdog/watchdog_core.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c
index 21e53cc49977..cd3ca6b366ef 100644
--- a/drivers/watchdog/watchdog_core.c
+++ b/drivers/watchdog/watchdog_core.c
@@ -126,6 +126,8 @@  int watchdog_init_timeout(struct watchdog_device *wdd,
 			wdd->timeout = timeout_parm;
 			return 0;
 		}
+		dev_err(dev, "driver supplied timeout (%u) out of range\n",
+			timeout_parm);
 		ret = -EINVAL;
 	}
 
@@ -136,9 +138,13 @@  int watchdog_init_timeout(struct watchdog_device *wdd,
 			wdd->timeout = t;
 			return 0;
 		}
+		dev_err(dev, "DT supplied timeout (%u) out of range\n", t);
 		ret = -EINVAL;
 	}
 
+	if (ret < 0 && wdd->timeout)
+		dev_warn(dev, "falling back to default timeout (%u)\n", wdd->timeout);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(watchdog_init_timeout);