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authorLinus Walleij <linus.walleij@linaro.org>2013-11-20 09:58:56 +0100
committerDaniel Lezcano <daniel.lezcano@linaro.org>2013-12-11 11:40:25 +0100
commitfdca679d87bb4ac0fdc882dbf3deb47a1f58b813 (patch)
treeaf0f0f0b2336f7f04fcb7df0b68e73520c6287cc /drivers/clocksource
parent2e8bac532f8bcd3834853e0a22b130b9fd59270d (diff)
clocksource: clksrc-of: Warn if no clock sources are found
Many platforms rely on clocksource_of_init() being implicitly called for registering clock sources and will get zero warnings if no working clock source is available. Let's print a critical error message if no clock source is found. Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/clksrc-of.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c
index 35639cf4e5a..a30b42c3ac3 100644
--- a/drivers/clocksource/clksrc-of.c
+++ b/drivers/clocksource/clksrc-of.c
@@ -28,6 +28,7 @@ void __init clocksource_of_init(void)
struct device_node *np;
const struct of_device_id *match;
clocksource_of_init_fn init_func;
+ unsigned clocksources = 0;
for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
if (!of_device_is_available(np))
@@ -36,5 +37,8 @@ void __init clocksource_of_init(void)
init_func = match->data;
init_func(np);
of_node_put(np);
+ clocksources++;
}
+ if (!clocksources)
+ pr_crit("%s: no matching clocksources found\n", __func__);
}