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    Subject[PATCH v4 15/22] clk: Probe clk providers on demand
    Date
    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@collabora.com>
    ---

    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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