diff options
Diffstat (limited to 'sys/isa/fd.c')
| -rw-r--r-- | sys/isa/fd.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/isa/fd.c b/sys/isa/fd.c index 7599392..7d30d8f 100644 --- a/sys/isa/fd.c +++ b/sys/isa/fd.c @@ -1588,6 +1588,11 @@ Fdopen(dev_t dev, int flags, int mode, struct thread *td) * * If UA has been forced, proceed. * + * If the drive has no changeline support, + * or if the drive parameters have been lost + * due to previous non-blocking access, + * assume a forced UA condition. + * * If motor is off, turn it on for a moment * and select our drive, in order to read the * UA hardware signal. @@ -1603,7 +1608,8 @@ Fdopen(dev_t dev, int flags, int mode, struct thread *td) */ unitattn = 0; if ((dflags & FD_NO_CHLINE) != 0 || - (fd->flags & FD_UA) != 0) { + (fd->flags & FD_UA) != 0 || + fd->ft == 0) { unitattn = 1; fd->flags &= ~FD_UA; } else if (fdc->fdout & (FDO_MOEN0 | FDO_MOEN1 | |
