Hi...:)
On Fri, Dec 24, 2010 at 13:40, Hemanth Kumar <hemwire@xxxxxxxxxxx> wrote:
> Hi mulyadi,
>
> Sorry for sending the mail directly,
It's ok, but just to let you know..I am just average when dealing with kernel :)
> ssize_t my_read(struct file *file,char *buf,size_t count,loff_t *pos){
> unsigned long res;
> void *k = (void *)&x;
> void *l = (void *)&x+1;
> void *j = (void *)&x+2;
>
> mutex_lock(&timer);
> res = copy_to_user(buf,k,sizeof(short));
hm, you say "read from user space", right? Then why "copy_to_user"?
shouldn't it be "copy_from_user"?
--
regards,
Mulyadi Santosa
Freelance Linux trainer and consultant
blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com
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