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| author | gibbs <gibbs@FreeBSD.org> | 1995-04-23 22:07:56 +0000 |
|---|---|---|
| committer | gibbs <gibbs@FreeBSD.org> | 1995-04-23 22:07:56 +0000 |
| commit | 2606a8d910183093ce2b38a07c7e62fca277440f (patch) | |
| tree | b2523d83e386ecacb55827c732ebd228a642085f /sys/scsi/st.c | |
| parent | 08c21a38d32c40274e29f86a6d1b61acc9bd9093 (diff) | |
| download | FreeBSD-src-2606a8d910183093ce2b38a07c7e62fca277440f.zip FreeBSD-src-2606a8d910183093ce2b38a07c7e62fca277440f.tar.gz | |
Set SCSI_NOSLEEP only when we really need to. This requires an additional
flags parameter to all xxstart routines so that the correct information can
be passed down into the device specific routines. This is needed to ensure
that ccb/scb allocation routines don't hang.
Submitted by: John Dyson
Diffstat (limited to 'sys/scsi/st.c')
| -rw-r--r-- | sys/scsi/st.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sys/scsi/st.c b/sys/scsi/st.c index 81c8e04..0b9e263 100644 --- a/sys/scsi/st.c +++ b/sys/scsi/st.c @@ -12,7 +12,7 @@ * on the understanding that TFS is not responsible for the correct * functioning of this software in any circumstances. * - * $Id: st.c,v 1.31 1995/03/21 11:21:08 dufault Exp $ + * $Id: st.c,v 1.32 1995/04/14 15:10:44 dufault Exp $ */ /* @@ -165,7 +165,7 @@ errval st_mode_select __P((u_int32 unit, u_int32 flags, \ errval st_comp __P((u_int32 unit, u_int32 mode)); void ststrategy(); int32 st_chkeod(); -void ststart(u_int32 unit); +void ststart(u_int32 unit, u_int32 flags); void st_unmount(); errval st_mount_tape(); void st_loadquirks(); @@ -957,7 +957,7 @@ st_strategy(struct buf *bp, struct scsi_link *sc_link) * not doing anything, otherwise just wait for completion * (All a bit silly if we're only allowing 1 open but..) */ - ststart(unit); + ststart(unit, 0); splx(opri); return; @@ -986,14 +986,14 @@ done: * ststart() is called at splbio */ void -ststart(unit) +ststart(unit, flags) u_int32 unit; + u_int32 flags; { struct scsi_link *sc_link = SCSI_LINK(&st_switch, unit); struct scsi_data *st = sc_link->sd; register struct buf *bp = 0; struct scsi_rw_tape cmd; - u_int32 flags; SC_DEBUG(sc_link, SDEV_DB2, ("ststart ")); /* @@ -1072,10 +1072,10 @@ ststart(unit) cmd.op_code = WRITE_COMMAND_TAPE; st->flags &= ~ST_FM_WRITTEN; st->flags |= ST_WRITTEN; - flags = SCSI_DATA_OUT; + flags |= SCSI_DATA_OUT; } else { cmd.op_code = READ_COMMAND_TAPE; - flags = SCSI_DATA_IN; + flags |= SCSI_DATA_IN; } /* * Handle "fixed-block-mode" tape drives by using the |
