hello... > code:89 5a 04 89 13 89 43 04 89 18 5b c3 8d 76 00 81 f9 ff 3f 00 > <0> kernel panic : Aiee,kernel interrupt handler! > IN interrupt handler- not syncing. Looking at this message alone, it is likely that you are sleeping inside interrupt context. Solution: don't use sleeping function...use non sleeping delay function if you really need to delay something here. regards Mulyadi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/