平台驱动Linux [英] Platform driver Linux

问题描述

大家好，



我是一名嵌入式Linux开发人员，我是Linux的新手，我对平台驱动程序有疑问，任何人都可以给以下结构的解释

  struct  platform_device {
  const   char  * name; 
 u32 id; 
  struct  device dev; 
 u32 num_resources; 
  struct  resource * resource; 
}; 

如果我们为 id添加 -1 ，我想知道结构中 id 的工作是什么这是什么意思





谢谢，

shan



从标题中删除大喊[/编辑]

解决方案

id大多数情况下是标识符aka句柄。 -1通常用于无效值



PS：这是一个更多Windows风格的论坛，所以对于Linux问题，它不是最好找的地方

hi all,

I am working as a embedded linux developer and i am new to Linux, i am having a doubt in platform driver, can any one give a explanation on the below structure

struct platform_device {
	const char	*name;
	u32		id;
	struct device	dev;
	u32		num_resources;
	struct resource	*resource;
};

I want to know what is the work of id in the structure if we put -1 for id what does it mean


Thanks,
shan

[Edit]Shouting removed from title[/Edit]

解决方案

id is most times an "identifier" aka "handle". -1 is often used for "invalid value"

PS: here is a more Windows-flavour forum, so with Linux-question it is not the best place to find

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