On Fri, Jun 01, 2018 at 08:50:37AM -0400, Hugo Lefeuvre wrote: > Add a rw semaphore fixing potential NULL pointer dereferences in the > pi433 driver. Unless you can measure the performance difference, do not use a rw semaphore, just use a normal mutex please. Odds are it will be faster in the end and take up less space. So please test, or if you can't test, just use a mutex. thanks, greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel