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don't hang if no floppy in system.

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This commit is contained in:
chopps 1994-07-18 01:37:48 +00:00
parent be81092ac3
commit fd7e6f6a49
1 changed files with 8 additions and 2 deletions
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10
sys/arch/amiga/dev/fd.c
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@ -27,7 +27,7 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: fd.c,v 1.10 1994/07/04 19:39:07 chopps Exp $
* $Id: fd.c,v 1.11 1994/07/18 01:37:48 chopps Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
@ -136,6 +136,7 @@ struct fd_softc {
#define FDF_WRITEWAIT (0x10) /* need to head select delay on next setpos */
#define FDF_HAVELABEL (0x20) /* label is valid */
#define FDF_JUSTFLUSH (0x40) /* don't bother caching track. */
#define FDF_NOTRACK0 (0x80) /* was not able to recalibrate drive */
int fdc_wantwakeup;
int fdc_side;
@ -370,6 +371,8 @@ Fdopen(dev, flags, devtype, p)
if ((sc = getsoftc(fdcd, FDUNIT(dev))) == NULL)
return(ENXIO);
if (sc->flags & FDF_NOTRACK0)
return(ENXIO);
if (sc->cachep == NULL)
sc->cachep = malloc(MAXTRKSZ, M_DEVBUF, M_WAITOK);
@ -1018,10 +1021,13 @@ fdsetpos(sc, trk, towrite)
* either just want cylinder 0 or doing
* a calibrate.
*/
while (FDTESTC(FDB_CYLZERO) == 0) {
nstep = 256;
while (FDTESTC(FDB_CYLZERO) == 0 && nstep--) {
FDSTEP;
delay(sc->stepdelay);
}
if (nstep < 0)
sc->flags |= FDF_NOTRACK0;
} else {
/*
* step the needed amount amount.