mptctl_syscall_down9
Down the mpt adapter syscall semaphore.
Usage
int mptctl_syscall_down(MPT_ADAPTER * ioc, int nonblock);
Arguments
ioc
Pointer to MPT adapter
nonblock
boolean, non-zero if O_NONBLOCK is set
Overview
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.
Releases
5 releases since Debian 4.0 (Etch); the text changed 4 times.