hello,everyone!
when i compile the device driver of led ,i get the erro like this:
[root@localhost led]# arm-linux-gcc -D__KERNEL__ -DMODULE -I /home/liumeng/lmldd
/linux-2.6.34.1/ -c -O -Wall led.c -o led.o
led.c:34: error: variable `GPIO_LED_ctl_ops' has initializer but incomplete type
led.c:36: error: unknown field `open' specified in initializer
led.c:36: error: `GPIO_LED_open' undeclared here (not in a function)
led.c:36: warning: excess elements in struct initializer
led.c:36: warning: (near initialization for `GPIO_LED_ctl_ops')
led.c:37: error: unknown field `read' specified in initializer
led.c:37: error: `GPIO_LED_read' undeclared here (not in a function)
led.c:37: warning: excess elements in struct initializer
led.c:37: warning: (near initialization for `GPIO_LED_ctl_ops')
led.c:38: error: unknown field `write' specified in initializer
led.c:38: error: `GPIO_LED_write' undeclared here (not in a function)
led.c:38: warning: excess elements in struct initializer
led.c:38: warning: (near initialization for `GPIO_LED_ctl_ops')
led.c:39: error: unknown field `ioctl' specified in initializer
led.c:39: error: `GPIO_LED_ioctl' undeclared here (not in a function)
led.c:39: warning: excess elements in struct initializer
led.c:39: warning: (near initialization for `GPIO_LED_ctl_ops')
led.c:40: error: unknown field `release' specified in initializer
led.c:40: error: `GPIO_LED_release' undeclared here (not in a function)
led.c:40: warning: excess elements in struct initializer
led.c:40: warning: (near initialization for `GPIO_LED_ctl_ops')
led.c:56: warning: "struct inode" declared inside parameter list
led.c:56: warning: its scope is only this definition or declaration, which is pr
obably not what you want
led.c: In function `GPIO_LED_ioctl':
led.c:60: warning: implicit declaration of function `S3C2410_GPIOREG'
led.c: At top level:
led.c:70: warning: "struct inode" declared inside parameter list
led.c: In function `GPIO_LED_open':
led.c:72: warning: `MOD_INC_USE_COUNT' is deprecated (declared at /usr/local/arm
/3.4.1/lib/gcc/arm-linux/3.4.1/../../../../arm-linux/sys-include/linux/module.h:
529)
led.c: At top level:
led.c:78: warning: "struct inode" declared inside parameter list
led.c: In function `GPIO_LED_release':
led.c:80: warning: `MOD_DEC_USE_COUNT' is deprecated (declared at /usr/local/arm
/3.4.1/lib/gcc/arm-linux/3.4.1/../../../../arm-linux/sys-include/linux/module.h:
541)
led.c: In function `GPIO_LED_CTL_init':
led.c:103: warning: implicit declaration of function `devfs_register_chrdev'
led.c: In function `cleanup_GPIO_LED_ctl':
led.c:132: warning: implicit declaration of function `devfs_unregister_chrdev'
led.c: At top level:
led.c:34: error: storage size of `GPIO_LED_ctl_ops' isn't known



can anyone help me ??!!thank you !!

Based on your post, no. You give us no details (version/distro of Linux, what "LED" you're trying to work with, where you got the code, etc.

Based on what you've posted, the short answer is, you've got a problem in your code, fix it.