[PATCH] thinkpad_acpi: moved hotkey_thread_mutex lock after set_freezable()

[Artem Savkov <artem.savkov@gmail.com>]

set_freezable() checks freezing during which no locks should be held.
hotkey_thread_mutex lock should be moved closer to where it is actually needed.

Signed-off-by: Artem Savkov <artem.savkov@gmail.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 22d8936..ffed96cd 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2463,13 +2463,13 @@ static int hotkey_kthread(void *data)
 	unsigned int poll_freq;
 	bool was_frozen;
 
-	mutex_lock(&hotkey_thread_mutex);
-
 	if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
 		goto exit;
 
 	set_freezable();
 
+	mutex_lock(&hotkey_thread_mutex);
+
 	so = 0;
 	si = 1;
 	t = 0;
@@ -2523,8 +2523,8 @@ static int hotkey_kthread(void *data)
 		si ^= 1;
 	}
 
-exit:
 	mutex_unlock(&hotkey_thread_mutex);
+exit:
 	return 0;
 }
 
-- 
1.8.1.4