From 2e20fbf592621b2c2aeddd82e0fa3dad053cce03 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 11 Feb 2016 13:19:10 -0800 Subject: [PATCH] clk: WARN_ON about to disable a critical clock Signed-off-by: Lee Jones Reviewed-by: Stephen Boyd Signed-off-by: Michael Turquette Link: lkml.kernel.org/r/1455225554-13267-3-git-send-email-mturquette@baylibre.com --- drivers/clk/clk.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 275201fd7b01..dede0ce679e4 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -574,6 +574,9 @@ static void clk_core_unprepare(struct clk_core *core) if (WARN_ON(core->prepare_count == 0)) return; + if (WARN_ON(core->prepare_count == 1 && core->flags & CLK_IS_CRITICAL)) + return; + if (--core->prepare_count > 0) return; @@ -679,6 +682,9 @@ static void clk_core_disable(struct clk_core *core) if (WARN_ON(core->enable_count == 0)) return; + if (WARN_ON(core->enable_count == 1 && core->flags & CLK_IS_CRITICAL)) + return; + if (--core->enable_count > 0) return;