From 1f9b25d3fb65b9384dec16d9db13a3e71abd9145 Mon Sep 17 00:00:00 2001 From: Christos Maragkos Date: Wed, 3 Jun 2026 18:21:34 +0300 Subject: [PATCH] HID: nintendo: Fix imu_timestamp_us double increment per report Previously, the imu_timestamp_us variable was incremented twice per report, causing it to advance by two times the desired amount. This resulted in incorrect jumps in IMU timestamps reported using MSC_TIMESTAMP, so userspace applications saw corrupted timing on functions such as gyroscope-based aim and motion controls. This is fixed by removing the redundant increment at the start of the report handling so the remaining can account for the full report interval. Fixes: 4ff5b10840a88 ("HID: nintendo: add IMU support") Signed-off-by: Christos Maragkos Signed-off-by: Jiri Kosina --- drivers/hid/hid-nintendo.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c index e7302ec01ff1..acf0adac6b84 100644 --- a/drivers/hid/hid-nintendo.c +++ b/drivers/hid/hid-nintendo.c @@ -1474,7 +1474,6 @@ static void joycon_parse_imu_report(struct joycon_ctlr *ctlr, dropped_threshold = ctlr->imu_avg_delta_ms * 3 / 2; dropped_pkts = (delta - min(delta, dropped_threshold)) / ctlr->imu_avg_delta_ms; - ctlr->imu_timestamp_us += 1000 * ctlr->imu_avg_delta_ms; if (dropped_pkts > JC_IMU_DROPPED_PKT_WARNING) { hid_warn_ratelimited(ctlr->hdev, "compensating for %u dropped IMU reports\n",