opp: Drop empty-table checks from _put functions

The current_opp is released only when whole OPP table is released,
otherwise it's only marked as removed by dev_pm_opp_remove_table().
Functions like dev_pm_opp_put_clkname() and dev_pm_opp_put_supported_hw()
are checking whether OPP table is empty and it's not if current_opp is
set since it holds the refcount of OPP, this produces a noisy warning
from these functions about busy OPP table. Remove the checks to fix it.

Cc: stable@vger.kernel.org
Fixes: 81c4d8a3c414 ("opp: Keep track of currently programmed OPP")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index b335c07..5543c54 100644 (file)
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1856,9 +1856,6 @@ void dev_pm_opp_put_supported_hw(struct opp_table *opp_table)
        if (unlikely(!opp_table))
                return;
 
-       /* Make sure there are no concurrent readers while updating opp_table */
-       WARN_ON(!list_empty(&opp_table->opp_list));
-
        kfree(opp_table->supported_hw);
        opp_table->supported_hw = NULL;
        opp_table->supported_hw_count = 0;
@@ -1944,9 +1941,6 @@ void dev_pm_opp_put_prop_name(struct opp_table *opp_table)
        if (unlikely(!opp_table))
                return;
 
-       /* Make sure there are no concurrent readers while updating opp_table */
-       WARN_ON(!list_empty(&opp_table->opp_list));
-
        kfree(opp_table->prop_name);
        opp_table->prop_name = NULL;
 
@@ -2056,9 +2050,6 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table)
        if (!opp_table->regulators)
                goto put_opp_table;
 
-       /* Make sure there are no concurrent readers while updating opp_table */
-       WARN_ON(!list_empty(&opp_table->opp_list));
-
        if (opp_table->enabled) {
                for (i = opp_table->regulator_count - 1; i >= 0; i--)
                        regulator_disable(opp_table->regulators[i]);
@@ -2178,9 +2169,6 @@ void dev_pm_opp_put_clkname(struct opp_table *opp_table)
        if (unlikely(!opp_table))
                return;
 
-       /* Make sure there are no concurrent readers while updating opp_table */
-       WARN_ON(!list_empty(&opp_table->opp_list));
-
        clk_put(opp_table->clk);
        opp_table->clk = ERR_PTR(-EINVAL);
 
@@ -2279,9 +2267,6 @@ void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table)
        if (unlikely(!opp_table))
                return;
 
-       /* Make sure there are no concurrent readers while updating opp_table */
-       WARN_ON(!list_empty(&opp_table->opp_list));
-
        opp_table->set_opp = NULL;
 
        mutex_lock(&opp_table->lock);