# include # include # include # include # include模块_许可证(' GPL ')；# define MAJOR _ NUM 254 static ssize _ t global var _ read(struct file *，
linux设备驱动模型有哪些(linux read 阻塞)
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# include # include # include # include # include模块_许可证(' GPL ')；# define MAJOR _ NUM 254 static ssize _ t global var _ read(struct file *，
