warning: initialization from incompatible pointer type 分析
2011-08-16 15:33
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在字符驱动中，这行代码报了警告信息：
经分析是因为函数声明与函数的原型不符，将其中的
同样，
函数原型以及file_operations成员分析参考http://blog.sina.com.cn/s/blog_56332e1d0100crc8.html
warning: initialization from incompatible pointer type
static ssize_t s3c2440_key_read(struct file *filp, char __user *buf, ssize_t count, loff_t *ppos);
经分析是因为函数声明与函数的原型不符，将其中的
ssize_t count改成
size_t count就可以了。
同样，
static void s3c2440_key_release(struct inode *inode, struct file *filp);将其中的
void改成
int就可以了。
函数原型以及file_operations成员分析参考http://blog.sina.com.cn/s/blog_56332e1d0100crc8.html
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