[PATCH] powerpc/signal32: Fix erroneous SIGSEGV on RT signal return

[Michael Ellerman]

On Fri, 23 Apr 2021 13:52:10 +0000 (UTC), Christophe Leroy wrote:
> Return of user_read_access_begin() is tested the wrong way,
> leading to a SIGSEGV when the user address is valid and likely
> an Oops when the user address is bad.
> 
> Fix the test.

Applied to powerpc/next.

[1/1] powerpc/signal32: Fix erroneous SIGSEGV on RT signal return
      https://git.kernel.org/powerpc/c/5256426247837feb8703625bda7fcfc824af04cf

cheers