tree 7187727755fbcb36b66c583c7ed89cb169a52f12
parent fa7744dbb69c06b69c7449063c440d8a53df9e6c
author David S. Miller <davem@sunset.davemloft.net> 1191988591 -0700
committer David S. Miller <davem@sunset.davemloft.net> 1192337592 -0700

[SPARC64]: Fix bugs in SYSV IPC handling in 64-bit processes.

Thanks to Tom Callaway for the excellent bug report and
test case.

sys_ipc() has several problems, most to due with semaphore
call handling:

1) 'err' return should be a 'long'
2) "union semun" is passed in a register on 64-bit compared
   to 32-bit which provides it on the stack and therefore
   by reference
3) Second and third arguments to SEMCTL are swapped compared
   to 32-bit.

Signed-off-by: David S. Miller <davem@davemloft.net>