[PATCH v5 16/23] clk: Probe clk providers on demand

From: Tomeu Vizoso
Date: Thu Sep 17 2015 - 09:00:11 EST


When looking up a clock through its OF node, probe it if it hasn't
already.

The goal is to reduce deferred probes to a minimum, as it makes it very
cumbersome to find out why a device failed to probe, and can introduce
very big delays in when a critical device is probed.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

drivers/clk/clk.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 43e2c3ad6c31..e5fe02a11c36 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -19,6 +19,7 @@
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/sched.h>
@@ -3004,6 +3005,8 @@ struct clk *__of_clk_get_from_provider(struct of_phandle_args *clkspec,
if (!clkspec)
return ERR_PTR(-EINVAL);

+ of_device_probe(clkspec->np);
+
/* Check if we have such a provider in our array */
mutex_lock(&of_clk_mutex);
list_for_each_entry(provider, &of_clk_providers, link) {
--
2.4.3

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