Re: [PATCH] staging: pi433: add rw semaphore fixing concurrency issues

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