1MPTCTL_SYSCALL_DOWN(9)       Message-based devices      MPTCTL_SYSCALL_DOWN(9)
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NAME

6       mptctl_syscall_down - Down the MPT adapter syscall semaphore.
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SYNOPSIS

9       int mptctl_syscall_down(MPT_ADAPTER * ioc, int nonblock);
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ARGUMENTS

12       ioc
13           Pointer to MPT adapter
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15       nonblock
16           boolean, non-zero if O_NONBLOCK is set
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DESCRIPTION

19       All of the ioctl commands can potentially sleep, which is illegal with
20       a spinlock held, thus we perform mutual exclusion here.
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22       Returns negative errno on error, or zero for success.
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25Kernel Hackers Manual 3.10         June 2019            MPTCTL_SYSCALL_DOWN(9)
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