From: Leonard Crestez <leonard.crestez@nxp.com>
Date: Tue, 2 Jul 2019 13:27:10 +0000 (+0300)
Subject: clk: Assert prepare_lock in clk_core_get_boundaries
X-Git-Tag: v5.4-rc1~97^2~5^5~2
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=9f7767226083d51c0674f1b71ac52daea6778b84;p=linux.git

clk: Assert prepare_lock in clk_core_get_boundaries

This function iterates the clk consumer list on clk_core so it must be
called under prepare_lock. This is already done by all callers but add a
lockdep assert to check anyway.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Link: https://lkml.kernel.org/r/29453ee8e820457d87a8faf9d496390e59c6826f.1562073871.git.leonard.crestez@nxp.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index a7cee0fac071..991fb3a62bda 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -593,6 +593,8 @@ static void clk_core_get_boundaries(struct clk_core *core,
 {
 	struct clk *clk_user;
 
+	lockdep_assert_held(&prepare_lock);
+
 	*min_rate = core->min_rate;
 	*max_rate = core->max_rate;