From: Wilken Gottwalt wilken.gottwalt@posteo.net
commit 7656cd2177612aa7c299b083ecff30a4d3e9a587 upstream.
During standby some PSUs turn off the microcontroller. A re-init is required during resume or the microcontroller stays unresponsive.
Fixes: d115b51e0e56 ("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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hwmon/corsair-psu.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
--- a/drivers/hwmon/corsair-psu.c +++ b/drivers/hwmon/corsair-psu.c @@ -570,6 +570,16 @@ static int corsairpsu_raw_event(struct h 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 */ @@ -592,6 +602,10 @@ static struct hid_driver corsairpsu_driv .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);