[drivers][i2c] Rename I2C mutex within RT_NAME_MAX

[Copilot]

I2C bus mutex name exceeded the default RT_NAME_MAX (12), causing assertion failures on registration.

• I2C mutex name: Shortened mutex registration string from i2c_bus_lock to i2c_lock to fit RT_NAME_MAX without requiring configuration changes.

/* before */
rt_mutex_init(&bus->lock, "i2c_bus_lock", RT_IPC_FLAG_PRIO);

/* after */
rt_mutex_init(&bus->lock, "i2c_lock", RT_IPC_FLAG_PRIO);

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Bug] I2C mutex 注册名长度超出 RT_NAME_MAX 默认值</issue_title>
<issue_description>### RT-Thread Version

5.2.2

Hardware Type/Architectures

apm32f103vb-miniboard

Develop Toolchain

GCC

Describe the bug

I2C 的 mutex 注册名为 "i2c_bus_lock"，包含结束符的长度为 13 字节，而 RT_NAME_MAX 的默认值是 12，在不修改 RT_NAME_MAX 的情况下，会导致断言失败。

rt-thread/components/drivers/i2c/dev_i2c_core.c

Line 27 in 88c1e6c

rt_mutex_init(&bus->lock, "i2c_bus_lock", RT_IPC_FLAG_PRIO);

Other additional context

No response</issue_description>

<agent_instructions>改名成 i2c_lock</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes [Bug] I2C mutex 注册名长度超出 RT_NAME_MAX 默认值 #11164

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[github-actions]

📌 Code Review Assignment

🏷️ Tag: components

Reviewers: @Maihuanyi

Changed Files (Click to expand)

• components/drivers/i2c/dev_i2c_core.c

🏷️ Tag: components_driver_i2c

Reviewers: @wdfk-prog

Changed Files (Click to expand)

• components/drivers/i2c/dev_i2c_core.c

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📊 Current Review Status (Last Updated: 2026-02-02 18:38 CST)

• ⌛ @Maihuanyi Pending Review
• ⌛ @wdfk-prog Pending Review

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