From: "Mario Limonciello (AMD)" superm1@kernel.org
[ Upstream commit 4d3a13afa8b64dc49293b3eab3e7beac11072c12 ]
Titas reports that the accelerometer sensor on their laptop only works after a warm boot or unloading/reloading the amd-sfh kernel module.
Presumably the sensor is in a bad state on cold boot and failing to start, so explicitly stop it before starting.
Cc: stable@vger.kernel.org Fixes: 93ce5e0231d79 ("HID: amd_sfh: Implement SFH1.1 functionality") Reported-by: Titas novatitas366@gmail.com Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220670 Tested-by: Titas novatitas366@gmail.com Signed-off-by: Mario Limonciello (AMD) superm1@kernel.org Signed-off-by: Jiri Kosina jkosina@suse.com [ Adjust context ] Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c index eda888f75f165..4a62edd430f29 100644 --- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c +++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c @@ -163,6 +163,8 @@ static int amd_sfh1_1_hid_client_init(struct amd_mp2_dev *privdata) if (rc) goto cleanup;
+ mp2_ops->stop(privdata, cl_data->sensor_idx[i]); + amd_sfh_wait_for_response(privdata, cl_data->sensor_idx[i], DISABLE_SENSOR); writel(0, privdata->mmio + AMD_P2C_MSG(0)); mp2_ops->start(privdata, info); status = amd_sfh_wait_for_response