From e907972be3816d741f08e82f08c4e88bc807ca36 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Fri, 19 Apr 2019 20:15:47 +0200 Subject: [PATCH] watchdog: add error messages when initializing timeout fails 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 Signed-off-by: Wolfram Sang Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/watchdog_core.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c index 21e53cc49977..62be9e52a4de 100644 --- a/drivers/watchdog/watchdog_core.c +++ b/drivers/watchdog/watchdog_core.c @@ -115,6 +115,8 @@ static void watchdog_check_min_max_timeout(struct watchdog_device *wdd) int watchdog_init_timeout(struct watchdog_device *wdd, unsigned int timeout_parm, struct device *dev) { + const char *dev_str = wdd->parent ? dev_name(wdd->parent) : + (const char *)wdd->info->identity; unsigned int t = 0; int ret = 0; @@ -126,6 +128,8 @@ int watchdog_init_timeout(struct watchdog_device *wdd, wdd->timeout = timeout_parm; return 0; } + pr_err("%s: driver supplied timeout (%u) out of range\n", + dev_str, timeout_parm); ret = -EINVAL; } @@ -136,9 +140,14 @@ int watchdog_init_timeout(struct watchdog_device *wdd, wdd->timeout = t; return 0; } + pr_err("%s: DT supplied timeout (%u) out of range\n", dev_str, t); ret = -EINVAL; } + if (ret < 0 && wdd->timeout) + pr_warn("%s: falling back to default timeout (%u)\n", dev_str, + wdd->timeout); + return ret; } EXPORT_SYMBOL_GPL(watchdog_init_timeout);