Commit 7656cd21 authored by Wilken Gottwalt's avatar Wilken Gottwalt Committed by Guenter Roeck
Browse files

hwmon: (corsair-psu) fix suspend behavior 



During standby some PSUs turn off the microcontroller. A re-init is
required during resume or the microcontroller stays unresponsive.

Fixes: d115b51e ("hwmon: add Corsair PSU HID controller driver")
Signed-off-by: default avatarWilken Gottwalt <wilken.gottwalt@posteo.net>
Link: https://lore.kernel.org/r/YLjCJiVtu5zgTabI@monster.powergraphx.local


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent faffc5d8

drivers/hwmon/corsair-psu.c

+14 −0
Original line number Diff line number Diff line
@@ -771,6 +771,16 @@ static int corsairpsu_raw_event(struct hid_device *hdev, struct hid_report *repo 
	return 0;

}



#ifdef CONFIG_PM

static int corsairpsu_resume(struct hid_device *hdev)

{

	struct corsairpsu_data *priv = hid_get_drvdata(hdev);



	/* some PSUs turn off the microcontroller during standby, so a reinit is required */

	return corsairpsu_init(priv);

}

#endif



static const struct hid_device_id corsairpsu_idtable[] = {

	{ HID_USB_DEVICE(0x1b1c, 0x1c03) }, /* Corsair HX550i */

	{ HID_USB_DEVICE(0x1b1c, 0x1c04) }, /* Corsair HX650i */
@@ -793,6 +803,10 @@ static struct hid_driver corsairpsu_driver = { 
	.probe		= corsairpsu_probe,

	.remove		= corsairpsu_remove,

	.raw_event	= corsairpsu_raw_event,

#ifdef CONFIG_PM

	.resume		= corsairpsu_resume,

	.reset_resume	= corsairpsu_resume,

#endif

};

module_hid_driver(corsairpsu_driver);