develoment workflow: how to avoid duplicate work ?

[valdis.kletnieks at vt.edu]

On Tue, 29 May 2018 22:56:57 -0400, Hugo Lefeuvre said:

> For example the TODO entry at line 876: If pi433_release() is
> called while pi433_ioctl() is executing between lines 879 and
> 880, we might perform a NULL pointer dereference, right ?

Yes, no, maybe.  That's what kernel locks are for.  Is that data
protected against concurrent access by a lock of some sort?
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