Similar to the previous commit, we should make sure that all devices are
runtime resumed before printing the clk_summary through debugfs. Failure
to do so would result in a deadlock if the thread is resuming a device
to print clk state and that device is also runtime resuming in another
thread, e.g the screen is turning on and the display driver is starting
up.
Fixes: 1bb294a7981c ("clk: Enable/Disable runtime PM for clk_summary")
Cc: Taniya Das <quic_tdas@xxxxxxxxxxx>
Cc: Douglas Anderson <dianders@xxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
---
drivers/clk/clk.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 31998ca67b1e..10792599bec1 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -3332,7 +3332,7 @@ static int clk_summary_show(struct seq_file *s, void *data)
seq_puts(s, " clock count count count rate accuracy phase cycle enable consumer id\n");
seq_puts(s, "---------------------------------------------------------------------------------------------------------------------------------------------\n");
-
+ clk_pm_runtime_get_all();
clk_prepare_lock();
for (; *lists; lists++)
@@ -3340,6 +3340,7 @@ static int clk_summary_show(struct seq_file *s, void *data)
clk_summary_show_subtree(s, c, 0);
clk_prepare_unlock();
+ clk_pm_runtime_put_all();
return 0;
}
@@ -3389,6 +3390,8 @@ static int clk_dump_show(struct seq_file *s, void *data)
struct hlist_head **lists = s->private;
seq_putc(s, '{');
+
+ clk_pm_runtime_get_all();
clk_prepare_lock();
for (; *lists; lists++) {
@@ -3401,6 +3404,7 @@ static int clk_dump_show(struct seq_file *s, void *data)
}
clk_prepare_unlock();
+ clk_pm_runtime_put_all();
seq_puts(s, "}\n");
return 0;
--
https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git
