diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.9/0050-OPP-Allow-notifiers-to-call-dev_pm_opp_get_-voltage-.patch')
-rw-r--r-- | target/linux/ipq806x/patches-4.9/0050-OPP-Allow-notifiers-to-call-dev_pm_opp_get_-voltage-.patch | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0050-OPP-Allow-notifiers-to-call-dev_pm_opp_get_-voltage-.patch b/target/linux/ipq806x/patches-4.9/0050-OPP-Allow-notifiers-to-call-dev_pm_opp_get_-voltage-.patch deleted file mode 100644 index 7b41157..0000000 --- a/target/linux/ipq806x/patches-4.9/0050-OPP-Allow-notifiers-to-call-dev_pm_opp_get_-voltage-.patch +++ /dev/null @@ -1,107 +0,0 @@ -From 4a17bbfcf72c94b37079e39a7c1e1e8653f7fe92 Mon Sep 17 00:00:00 2001 -From: Stephen Boyd <sboyd@codeaurora.org> -Date: Fri, 18 Sep 2015 17:52:07 -0700 -Subject: [PATCH 50/69] OPP: Allow notifiers to call dev_pm_opp_get_{voltage, - freq} RCU-free - -We pass the dev_pm_opp structure to OPP notifiers but the users -of the notifier need to surround calls to dev_pm_opp_get_*() with -RCU read locks to avoid lockdep warnings. The notifier is already -called with the dev_opp's srcu lock held, so it should be safe to -assume the devm_pm_opp structure is already protected inside the -notifier. Update the lockdep check for this. - -Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> -Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> -Acked-by: Viresh Kumar <viresh.kumar@linaro.org> -Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> ---- - drivers/base/power/opp/core.c | 19 ++++++++++--------- - 1 file changed, 10 insertions(+), 9 deletions(-) - ---- a/drivers/base/power/opp/core.c -+++ b/drivers/base/power/opp/core.c -@@ -32,9 +32,10 @@ LIST_HEAD(opp_tables); - /* Lock to allow exclusive modification to the device and opp lists */ - DEFINE_MUTEX(opp_table_lock); - --#define opp_rcu_lockdep_assert() \ -+#define opp_rcu_lockdep_assert(s) \ - do { \ - RCU_LOCKDEP_WARN(!rcu_read_lock_held() && \ -+ !(s && srcu_read_lock_held(s)) && \ - !lockdep_is_held(&opp_table_lock), \ - "Missing rcu_read_lock() or " \ - "opp_table_lock protection"); \ -@@ -72,7 +73,7 @@ struct opp_table *_find_opp_table(struct - { - struct opp_table *opp_table; - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - if (IS_ERR_OR_NULL(dev)) { - pr_err("%s: Invalid parameters\n", __func__); -@@ -106,7 +107,7 @@ unsigned long dev_pm_opp_get_voltage(str - struct dev_pm_opp *tmp_opp; - unsigned long v = 0; - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - tmp_opp = rcu_dereference(opp); - if (IS_ERR_OR_NULL(tmp_opp)) -@@ -138,7 +139,7 @@ unsigned long dev_pm_opp_get_freq(struct - struct dev_pm_opp *tmp_opp; - unsigned long f = 0; - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - tmp_opp = rcu_dereference(opp); - if (IS_ERR_OR_NULL(tmp_opp) || !tmp_opp->available) -@@ -172,7 +173,7 @@ bool dev_pm_opp_is_turbo(struct dev_pm_o - { - struct dev_pm_opp *tmp_opp; - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - tmp_opp = rcu_dereference(opp); - if (IS_ERR_OR_NULL(tmp_opp) || !tmp_opp->available) { -@@ -300,7 +301,7 @@ struct dev_pm_opp *dev_pm_opp_get_suspen - { - struct opp_table *opp_table; - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - opp_table = _find_opp_table(dev); - if (IS_ERR(opp_table) || !opp_table->suspend_opp || -@@ -380,7 +381,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ - struct opp_table *opp_table; - struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - opp_table = _find_opp_table(dev); - if (IS_ERR(opp_table)) { -@@ -444,7 +445,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ - { - struct opp_table *opp_table; - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - if (!dev || !freq) { - dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq); -@@ -486,7 +487,7 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ - struct opp_table *opp_table; - struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); - -- opp_rcu_lockdep_assert(); -+ opp_rcu_lockdep_assert(NULL); - - if (!dev || !freq) { - dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq); |