EmbLogic » niket

linux Environment

niket — Thu, 22 Dec 2011 13:37:43 +0000

i use /dev/tty for redirect the stdout for particular portion for the program but it redirect all the stdout statements…

nibble mode

niket — Sat, 17 Dec 2011 09:50:47 +0000

hows inb and outb work internally?

getting problem in handshaking through strobe pin in nibble mode. how can i do it?

char driver

niket — Fri, 14 Oct 2011 08:07:13 +0000

at time of the writing in multiple quantum there is killed in kernel page and err reported is

sleeping function called from invalid context at arch/x86/mm/fault.c

what dose it mean?

and kernel crash after 5 min.

char driver

niket — Thu, 13 Oct 2011 05:59:37 +0000

there is kernel crash at the time of kmalloc and give error of unable to hander pegging request

char driver

niket — Sat, 08 Oct 2011 13:57:30 +0000

scull_triming and maping of scull_write has been done

in scull

niket — Tue, 04 Oct 2011 06:08:21 +0000

how can i free memory after reading data for item, by free system call or delete the linking between qsets.

i use free system call it give me segmentation fault error

register the driver acording to 2.4 kernal give error in rmmod and all hedar file and decleartion are include in heder24.h

niket — Thu, 29 Sep 2011 13:50:37 +0000

#include”header24.h”
int i,retvl;
module_param(i,int,S_IRUGO);

int init_function(void)
{
retvl=register_chrdev(0,”my_reg”,&fops);
if(retvl<0)
printk(KERN_ERR “error\n”);
printk(KERN_INFO “retvl=%d\n”,retvl);
printk(KERN_INFO “HELLO WORLD\n”);
printk(KERN_INFO “process name=%s \t process id=%d”,current->comm,current->pid);
printk(KERN_INFO “i=%d\n”,i);

return 0;
}
void exit_function(void)
{
unregister_chrdev(retvl,”my_reg”);
printk(KERN_INFO “BYE\n”);
}