On Feb 7, 2008 6:04 PM, Martin Candurra <[EMAIL PROTECTED]> wrote: > > On Feb 7, 2008 9:17 PM, Ramagudi Naziir <[EMAIL PROTECTED]> wrote: > > > is it allowed to use the copy from/to userspace with irq disabled ? > As Mulyadi said copy from/to user space may block (try to think that the > page you want to copy from/to is not in memory). > > Why do you think you need to disable interrupts ?
I just read this: "Driver has to mess up with copy_to/from_user, and in many cases * does it unproperly. Common mistakes are : * * buffer overflows (no checks or off by one checks) * * call copy_to/from_user with irq disabled" in iw_handler.h... and tried to understand why it is a problem.. thanks.. > > Regards. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [EMAIL PROTECTED] Please read the FAQ at http://kernelnewbies.org/FAQ
