Sparse context warning on 0.5.0

["Franco, Scott" <Scott.Franco@xxxxxxxxxxxxxxxxxx>]

Hi,

I am using sparse 0.5.0 release. I am getting several context check errors on my code.
I reduced a routine that was being flagged to the minimum, and I still get the error:

/nfs/causers2/sfranco/projects/cnnic70xx_rearch/host/driver/src/linux/cavium/octeon_poll.c:130:5: warning: context imbalance in 'octeon_register_poll_fn' - wrong count at exit

The routine now is:

static spinlock_t mylock = SPIN_LOCK_UNLOCKED;

int octeon_register_poll_fn(int oct_id, octeon_poll_ops_t * ops)

{

    spin_lock(&mylock);
    spin_unlock(&mylock);

    return 0;
}

Ie., stripped to the bare minimum. My understanding from reading the docs and mails on the
subject is that a function that does not enter with the lock, acquires and releases it inside the
function and exits with the lock unlocked, does not need annotation with __acquires or __releases.

Any hints you can give me?

Machine: x64, Scientific Linux (RHEL).

Thanks,

Scott Franco
Cavium Networks

--
To unsubscribe from this list: send the line "unsubscribe linux-sparse" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html