移植AD驱动遇到的错误及解决

/home/jason/JasonHan/ADC/s3c2410adc.c: In function `s3c2410_adc_init':
/home/jason/JasonHan/ADC/s3c2410adc.c:154: warning: `deprecated_irq_flag' is deprecated (declared at include/linux/interrupt.h:66)
标志SA_INTERRUPT在2.6.22的内核中已经过时，用 IRQF_DISABLED 替换。
/home/jason/JasonHan/ADC/s3c2410adc.c:154: warning: passing arg 2 of `request_irq' from incompatible pointer type
request_irq函数在2.6.22的内核中改动过

现在的中断注册函数的定义为：

int request_irq(unsigned int irq, irq_handler_t handler,unsigned long irqflags, const char *devname, void *dev_id)
typedef irqreturn_t (*irq_handler_t)(int, void *);

以前是：

int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *),unsigned long irq_flags, const char * devname, void *dev_id)

/home/jason/JasonHan/ADC/s3c2410adc.c:186: warning: implicit declaration of function `devfs_mk_cdev'
/home/jason/JasonHan/ADC/s3c2410adc.c: In function `s3c2410_adc_exit':
/home/jason/JasonHan/ADC/s3c2410adc.c:202: warning: implicit declaration of function `devfs_remove'
include/asm/uaccess.h: In function `s3c2410_adc_write':
/home/jason/JasonHan/ADC/s3c2410adc.c:88: warning: ignoring return value of `copy_from_user', declared with attribute warn_unused_result
include/asm/uaccess.h: In function `s3c2410_adc_read':
/home/jason/JasonHan/ADC/s3c2410adc.c:111: warning: ignoring return value of `copy_to_user', declared with attribute warn_unused_result
  Building modules, stage 2.
  MODPOST 1 modules
WARNING: "devfs_remove" [/home/jason/JasonHan/ADC/s3c2410adc.ko] undefined!
WARNING: "devfs_mk_cdev" [/home/jason/JasonHan/ADC/s3c2410adc.ko] undefined!
  CC      /home/jason/JasonHan/ADC/s3c2410adc.mod.o
  LD [M]  /home/jason/JasonHan/ADC/s3c2410adc.ko
make[1]:正在离开目录 `/home/jason/kernel/linux-2.6.22.1'