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'\" te .\" Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. .TH scsi_poll 9F "16 Jan 2006" "Oracle Solaris 11.4" "Kernel Functions" .SH NAME scsi_poll \- run a polled SCSI command on behalf of a target driver .SH SYNOPSIS .LP .nf #include <sys/scsi/scsi.h> \fBint\fR \fBscsi_poll\fR(\fBstruct scsi_pkt *\fR\fIpkt\fR); .fi .SH INTERFACE LEVEL .sp .LP Solaris DDI specific (Solaris DDI). .SH PARAMETERS .sp .ne 2 .mk .na \fB\fIpkt\fR\fR .ad .RS 7n .rt Pointer to the \fBscsi_pkt\fR(9S) structure. .RE .SH DESCRIPTION .sp .LP The \fBscsi_poll()\fR function requests the host adapter driver to run a polled command. Unlike \fBscsi_transport\fR(9F) which runs commands asynchronously, \fBscsi_poll()\fR runs commands to completion before returning. If the \fBpkt_time\fR member of \fIpkt\fR is \fB0\fR, the value of \fBpkt_time\fR is defaulted to \fBSCSI_POLL_TIMEOUT\fR to prevent an indefinite hang of the system. .SH RETURN VALUES .sp .LP The \fBscsi_poll()\fR function returns: .sp .ne 2 .mk .na \fB\fB0\fR\fR .ad .RS 6n .rt command completed successfully. .RE .sp .ne 2 .mk .na \fB\fB-1\fR\fR .ad .RS 6n .rt command failed. .RE .SH CONTEXT .sp .LP The \fBscsi_poll()\fR function can be called from user, interrupt, or kernel context. This function should not be called when the caller is executing \fBtimeout\fR(9F) in the context of a thread. .SH SEE ALSO .sp .LP \fBmakecom\fR(9F), \fBscsi_transport\fR(9F), \fBscsi_pkt\fR(9S) .sp .LP \fIWriting Device Drivers in Oracle Solaris 11.4\fR .SH WARNINGS .sp .LP Since \fBscsi_poll()\fR runs commands to completion before returning, it may require more time than is desirable when called from interrupt context. Therefore, calling \fBscsi_poll\fR from interrupt context is not recommended.