Re: [PATCH v5 1/4] mfd: add support for Diolan DLN-2 devices

[Johan Hovold]

On Thu, Sep 25, 2014 at 01:25:24PM +0300, Octavian Purdila wrote:

> Johan, I think we don't really need the spinlock, the disconnect flag
> and an atomic counter should work. Do you see any issues with that?

No, you need to test and increment atomically so the lock is needed.

Consider what could happen if you get a disconnect after testing but
before incrementing.

Johan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/