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hwmon: (corsair-psu) fix suspend behavior

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

Fixes: d115b51e0e ("hwmon: add Corsair PSU HID controller driver")
Signed-off-by: Wilken Gottwalt <wilken.gottwalt@posteo.net>
Link: https://lore.kernel.org/r/YLjCJiVtu5zgTabI@monster.powergraphx.local
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Wilken Gottwalt 2021-06-03 11:51:02 +00:00 committed by Guenter Roeck
parent faffc5d857
commit 7656cd2177
1 changed files with 14 additions and 0 deletions
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14
drivers/hwmon/corsair-psu.c
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@ -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);