From: Daniel Hung-yu Wu <hywu@xxxxxxxxxx>
Reboot or shutdown during delayed works could corrupt communication with
EC and certain I2C controller may not be able to recover from the error
state.
This patch registers a shutdown callback used to cancel the debugfs log
worker thread.
Signed-off-by: Daniel Hung-yu Wu <hywu@xxxxxxxxxxxx>
Signed-off-by: Thierry Escande <thierry.escande@xxxxxxxxxxxxx>
---
drivers/platform/chrome/cros_ec_dev.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/platform/chrome/cros_ec_dev.c b/drivers/platform/chrome/cros_ec_dev.c
index 2571f5e..225d8e9 100644
--- a/drivers/platform/chrome/cros_ec_dev.c
+++ b/drivers/platform/chrome/cros_ec_dev.c
@@ -460,6 +460,14 @@ static int ec_device_remove(struct platform_device *pdev)
return 0;
}
+static void ec_device_shutdown(struct platform_device *pdev)
+{
+ struct cros_ec_dev *ec = dev_get_drvdata(&pdev->dev);
+
+ /* Be sure to clear up debugfs delayed works */
+ cros_ec_debugfs_remove(ec);
+}
+
static const struct platform_device_id cros_ec_id[] = {
{ "cros-ec-ctl", 0 },
{ /* sentinel */ },
@@ -502,6 +510,7 @@ static struct platform_driver cros_ec_dev_driver = {
},
.probe = ec_device_probe,
.remove = ec_device_remove,
+ .shutdown = ec_device_shutdown,
};
static int __init cros_ec_dev_init(void)
--
2.7.4
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