>>i am trying to learn and write device driver on linux kernel 2.4 redhat
>> distribution
>>
>>iam getting compilation errors for driver code.
>>struct file_operations my_ops ={NULL,my_read,my_write,NULL,NULL,NULL
>>NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
>>NULL };
>>
>>ERROR -> my_ops has intializer but incomplete type
>
> This is not a good way to do it. See e.g. fs/pipe.c#read_fifo_fops
> for an easier approach:
>
> struct file_operations read_fifo_fops = {
> llseek: no_llseek,
> read: pipe_read,
> write: bad_pipe_w,
> poll: fifo_poll,
> ioctl: pipe_ioctl,
> open: pipe_read_open,
> release: pipe_read_release,
> };
Aside from this, the main issue is the "has intializer but incomplete
type" error, which indicates that the definition of struct
file_operations has not been seen by the compiler. This seems to be
defined (in 2.4.20, at least) by include/linux/fs.h, so Raman will
need to #include that file for the initialization to work.
-- Sean Neakums - <sneakums@zork.net> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/