diff options
Diffstat (limited to 'drivers/hid/hid-sony.c')
| -rw-r--r-- | drivers/hid/hid-sony.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index 2f073f536070..c7baedfc78bd 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -1597,16 +1597,38 @@ static int dualshock4_get_calibration_data(struct sony_sc *sc) * of the controller, so that it sends input reports of type 0x11. */ if (sc->quirks & (DUALSHOCK4_CONTROLLER_USB | DUALSHOCK4_DONGLE)) { + int retries; + buf = kmalloc(DS4_FEATURE_REPORT_0x02_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; - ret = hid_hw_raw_request(sc->hdev, 0x02, buf, - DS4_FEATURE_REPORT_0x02_SIZE, - HID_FEATURE_REPORT, - HID_REQ_GET_REPORT); - if (ret < 0) - goto err_stop; + /* We should normally receive the feature report data we asked + * for, but hidraw applications such as Steam can issue feature + * reports as well. In particular for Dongle reconnects, Steam + * and this function are competing resulting in often receiving + * data for a different HID report, so retry a few times. + */ + for (retries = 0; retries < 3; retries++) { + ret = hid_hw_raw_request(sc->hdev, 0x02, buf, + DS4_FEATURE_REPORT_0x02_SIZE, + HID_FEATURE_REPORT, + HID_REQ_GET_REPORT); + if (ret < 0) + goto err_stop; + + if (buf[0] != 0x02) { + if (retries < 2) { + hid_warn(sc->hdev, "Retrying DualShock 4 get calibration report (0x02) request\n"); + continue; + } else { + ret = -EILSEQ; + goto err_stop; + } + } else { + break; + } + } } else { u8 bthdr = 0xA3; u32 crc; |