Locking IOCTL

[Praveen kumar <chatpravi@xxxxxxxxx>]

Hi All,
I have a situation where I have to lock the ioctl provided in my driver. I
have a uni processor (ARM) system.
I am using Mutex as the lock for my ioctl.
DEFINE_MUTEX(&lock_ioctl);
MyIoctl()
{
Mutex_lock(&lock_ioctl);
Switch(){
...........
}
Mutex_unlock(&lock_ioctl);
return 0;
}
I just wanted to know am I using the best lock available for the situation
aor do I have any flaw in my implementation???

And from LKD I  read that "*lock the data not the code*" and which I am

literally doing so ?? any comments on this ?

I have interrupts in my driver which is nothing to do with the lock.I am
taking care that where ever I return in my ioctl the lock is released.

Thanks ,
Praveen

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