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mfd: cros_ec_dev: Register shutdown function for debugfs

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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@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Daniel Hung-yu Wu 2018-04-18 12:24:02 +02:00 committed by Lee Jones
parent 95a4d07fde
commit e15b7f44a2
1 changed files with 9 additions and 0 deletions
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9
drivers/mfd/cros_ec_dev.c
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@ -472,6 +472,14 @@ 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[] = {
{ DRV_NAME, 0 },
{ /* sentinel */ },
@ -514,6 +522,7 @@ 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)