Possibly because of the changes in usbhid/hid-core.c the first raw input report is not received during ccp_probe function and it will timeout. I am not sure, whether this behaviour is expected after hid_device_io_start or if I am missing something. As a solution this adds msleep(50) to ccp_probe so that all initial input reports can be received. Signed-off-by: Marius Zachmann <mail@xxxxxxxxxxxxxxxxx> --- drivers/hwmon/corsair-cpro.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/corsair-cpro.c b/drivers/hwmon/corsair-cpro.c index 591929ec217a..6359409e6c71 100644 --- a/drivers/hwmon/corsair-cpro.c +++ b/drivers/hwmon/corsair-cpro.c @@ -10,6 +10,7 @@ #include <linux/bitops.h> #include <linux/completion.h> +#include <linux/delay.h> #include <linux/hid.h> #include <linux/hwmon.h> #include <linux/kernel.h> @@ -513,8 +514,8 @@ static int ccp_probe(struct hid_device *hdev, const struct hid_device_id *id) init_completion(&ccp->wait_input_report); hid_device_io_start(hdev); + msleep(50); /* make sure, events can be received */ - /* temp and fan connection status only updates when device is powered on */ ret = get_temp_cnct(ccp); if (ret) goto out_hw_close; -- 2.28.0
