[components/drivers/usb/cherryusb/common] modify macro-define: __USED…

[skllii]

RT-Thread Version
master

Hardware Type/Architectures
ARM contex-M4

Develop Toolchain
IAR

Describe the bug
usb_util.h 宏定义__USED针对__ICCARM_V8的定义是无效的，导致CLASS_INFO_DEFINE失效，会被编译器优化。

__ICCARM_V8应该使用__root
#define __USED __root

[github-actions]

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[github-actions]

📌 Code Review Assignment

🏷️ Tag: components

Reviewers: @Maihuanyi

Changed Files (Click to expand)

• components/drivers/usb/cherryusb/common/usb_util.h

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📊 Current Review Status (Last Updated: 2026-06-18 09:08 CST)

• ⌛ @Maihuanyi Pending Review

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[github-actions]

MemBrowse Memory Report

No memory changes detected for:

• at32f415-start
• esp32-c3
• gd32105r-start
• hc32f334
• hpmicro-hpm5301evklite
• infineon-psoc6
• k230
• loongson-ls1cdev
• nordic-nrf51822
• nuvoton-m487
• nxp-lpc1114
• qemu-virt64-aarch64
• raspberry-pico-rp2040
• renesas-ra2l1
• simulator
• stm32f407-rt-spark
• stm32l475-atk-pandora-llvm
• wch-ch32v208w-r0
• x86
• xuantie-e901plus

[sakumisu]

-1。参考 cmsis 官方文件 https://github.com/CherryUSB/cherryusb_stm32/blob/master/usb_device/stm32f429igt6/Drivers/CMSIS/Include/cmsis_iccarm.h#L221