MPTCTL_SYSCALL_DOWN(9) Message-based devices MPTCTL_SYSCALL_DOWN(9)
NAME
mptctl_syscall_down - Down the MPT adapter syscall semaphore.
SYNOPSIS
int mptctl_syscall_down(MPT_ADAPTER * ioc, int nonblock);
ARGUMENTS
ioc
Pointer to MPT adapter
nonblock
boolean, non-zero if O_NONBLOCK is set
DESCRIPTION
All of the ioctl commands can potentially sleep, which is illegal with a spinlock held, thus we perform mutual exclusion here.
Returns negative errno on error, or zero for success.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 MPTCTL_SYSCALL_DOWN(9)
