1. NAME▲

mptctl_syscall_down - Down the MPT adapter syscall semaphore.

2. SYNOPSIS ▲

int mptctl_syscall_down(MPT_ADAPTER *  ioc , int  nonblock );

3. ARGUMENTS ▲

ioc
    Pointer to MPT adapter

nonblock
    boolean, non-zero if O_NONBLOCK is set

4. 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.

5. COPYRIGHT ▲