[PATCH 2/2] drivers: hid: warn feature report 0x81
From: Henry Castro <hidden>
Date: 2022-10-02 22:01:52
Also in:
lkml
Subsystem:
hid core layer, the rest · Maintainers:
Jiri Kosina, Benjamin Tissoires, Linus Torvalds
Unfortunately, my PS DualShock 4, does not support the feature 0x81 to get the MAC address. Instead, use a unique hash to fake a MAC address, so I can use DS4 to play Retroarch :) Signed-off-by: Henry Castro <redacted> --- drivers/hid/hid-sony.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index 656caa07b25f..e3e9c58887cf 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c@@ -2641,13 +2641,14 @@ static int sony_check_add(struct sony_sc *sc) HID_REQ_GET_REPORT); if (ret != DS4_FEATURE_REPORT_0x81_SIZE) { - hid_err(sc->hdev, "failed to retrieve feature report 0x81 with the DualShock 4 MAC address\n"); - ret = ret < 0 ? ret : -EINVAL; - goto out_free; + uint32_t hash = full_name_hash(NULL, dev_name(&sc->hdev->dev), + strlen(dev_name(&sc->hdev->dev))); + hid_warn(sc->hdev, "failed to retrieve feature report 0x81 with the DualShock 4 MAC address\n"); + memcpy(sc->mac_address, &hash, sizeof(hash)); + } else { + memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address)); } - memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address)); - snprintf(sc->hdev->uniq, sizeof(sc->hdev->uniq), "%pMR", sc->mac_address); } else if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
--
2.20.1