From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/hid/hid-sjoy.c | 159 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 drivers/hid/hid-sjoy.c (limited to 'drivers/hid/hid-sjoy.c') diff --git a/drivers/hid/hid-sjoy.c b/drivers/hid/hid-sjoy.c new file mode 100644 index 000000000..193ab2a61 --- /dev/null +++ b/drivers/hid/hid-sjoy.c @@ -0,0 +1,159 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Force feedback support for SmartJoy PLUS PS2->USB adapter + * + * Copyright (c) 2009 Jussi Kivilinna + * + * Based of hid-pl.c and hid-gaff.c + * Copyright (c) 2007, 2009 Anssi Hannula + * Copyright (c) 2008 Lukasz Lubojanski + */ + +/* + */ + +/* #define DEBUG */ + +#include +#include +#include +#include +#include "hid-ids.h" + +#ifdef CONFIG_SMARTJOYPLUS_FF + +struct sjoyff_device { + struct hid_report *report; +}; + +static int hid_sjoyff_play(struct input_dev *dev, void *data, + struct ff_effect *effect) +{ + struct hid_device *hid = input_get_drvdata(dev); + struct sjoyff_device *sjoyff = data; + u32 left, right; + + left = effect->u.rumble.strong_magnitude; + right = effect->u.rumble.weak_magnitude; + dev_dbg(&dev->dev, "called with 0x%08x 0x%08x\n", left, right); + + left = left * 0xff / 0xffff; + right = (right != 0); /* on/off only */ + + sjoyff->report->field[0]->value[1] = right; + sjoyff->report->field[0]->value[2] = left; + dev_dbg(&dev->dev, "running with 0x%02x 0x%02x\n", left, right); + hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT); + + return 0; +} + +static int sjoy_input_configured(struct hid_device *hid, struct hid_input *hidinput) +{ + struct sjoyff_device *sjoyff; + struct hid_report *report; + struct list_head *report_list = + &hid->report_enum[HID_OUTPUT_REPORT].report_list; + struct input_dev *dev = hidinput->input; + int error; + + if (!list_is_first(&hidinput->list, &hid->inputs)) + return 0; + + report = list_first_entry_or_null(report_list, struct hid_report, list); + if (!report) { + hid_err(hid, "no output reports found\n"); + return -ENODEV; + } + if (report->maxfield < 1) { + hid_err(hid, "no fields in the report\n"); + return -ENODEV; + } + + if (report->field[0]->report_count < 3) { + hid_err(hid, "not enough values in the field\n"); + return -ENODEV; + } + + sjoyff = kzalloc_obj(struct sjoyff_device); + if (!sjoyff) + return -ENOMEM; + + set_bit(FF_RUMBLE, dev->ffbit); + + sjoyff->report = report; + sjoyff->report->field[0]->value[0] = 0x01; + sjoyff->report->field[0]->value[1] = 0x00; + sjoyff->report->field[0]->value[2] = 0x00; + hid_hw_request(hid, sjoyff->report, HID_REQ_SET_REPORT); + + error = input_ff_create_memless(dev, sjoyff, hid_sjoyff_play); + if (error) { + kfree(sjoyff); + return error; + } + + return 0; +} +#else +static inline int sjoy_input_configured(struct hid_device *hid, + struct hid_input *hidinput) +{ + return 0; +} +#endif + +static int sjoy_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + int ret; + + hdev->quirks |= id->driver_data; + + ret = hid_parse(hdev); + if (ret) { + hid_err(hdev, "parse failed\n"); + return ret; + } + + ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); + if (ret) { + hid_err(hdev, "hw start failed\n"); + return ret; + } + + return 0; +} + +static const struct hid_device_id sjoy_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO), + .driver_data = HID_QUIRK_NOGET }, + { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO), + .driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET | + HID_QUIRK_SKIP_OUTPUT_REPORTS }, + { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO), + .driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET | + HID_QUIRK_SKIP_OUTPUT_REPORTS }, + { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) }, + { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) }, + { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD), + .driver_data = HID_QUIRK_MULTI_INPUT | + HID_QUIRK_SKIP_OUTPUT_REPORTS }, + { HID_USB_DEVICE(USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII), + .driver_data = HID_QUIRK_MULTI_INPUT | + HID_QUIRK_SKIP_OUTPUT_REPORTS }, + { } +}; +MODULE_DEVICE_TABLE(hid, sjoy_devices); + +static struct hid_driver sjoy_driver = { + .name = "smartjoyplus", + .id_table = sjoy_devices, + .probe = sjoy_probe, + .input_configured = sjoy_input_configured, +}; +module_hid_driver(sjoy_driver); + +MODULE_DESCRIPTION("Force feedback support for SmartJoy PLUS PS2->USB adapter"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Jussi Kivilinna"); + -- cgit v1.3.1