[PATCH v2] platform/x86: thinkpad_acpi: Take mutex in hotkey_resume

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



hotkey_status_set expects the hotkey_mutex to be held.
It seems like it was missed here and that gives lockdep
warnings while resuming.

Signed-off-by: Dennis Bonke <admin@xxxxxxxxxxxxxxx>
---
 drivers/platform/x86/thinkpad_acpi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index d70c89d32534..41584427dc32 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -4116,9 +4116,11 @@ static void hotkey_resume(void)
 {
 	tpacpi_disable_brightness_delay();
 
+	mutex_lock(&hotkey_mutex);
 	if (hotkey_status_set(true) < 0 ||
 	    hotkey_mask_set(hotkey_acpi_mask) < 0)
 		pr_err("error while attempting to reset the event firmware interface\n");
+	mutex_unlock(&hotkey_mutex);
 
 	tpacpi_send_radiosw_update();
 	tpacpi_input_send_tabletsw();
-- 
2.40.1




[Index of Archives]     [Linux Kernel Development]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux