[PATCH] hwmon: corsair-psu: fix suspend behavior
From: Wilken Gottwalt <wilken.gottwalt@posteo.net>
Date: 2021-06-03 05:23:44
Also in:
lkml
Subsystem:
corsair-psu hardware monitor driver, hardware monitoring, the rest · Maintainers:
Wilken Gottwalt, Guenter Roeck, Linus Torvalds
During standby some PSUs turn off the microcontroller. A re-init is
required during resume or the microcontroller stays unresponsive.
Fixes: 726c945ab2eb ("hwmon: (corsair-psu) Remove unneeded semicolons")
Signed-off-by: Wilken Gottwalt <wilken.gottwalt@posteo.net>
---
drivers/hwmon/corsair-psu.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/hwmon/corsair-psu.c b/drivers/hwmon/corsair-psu.c
index 02298b86b57b..731d5117f9f1 100644
--- a/drivers/hwmon/corsair-psu.c
+++ b/drivers/hwmon/corsair-psu.c@@ -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);
--
2.31.1