avoid panic's on attempted open's of non-existent devices
authorKirk McKusick <mckusick@ucbvax.Berkeley.EDU>
Thu, 11 May 1995 01:33:04 +0000 (17:33 -0800)
committerKirk McKusick <mckusick@ucbvax.Berkeley.EDU>
Thu, 11 May 1995 01:33:04 +0000 (17:33 -0800)
commit689a3d14e493340130f85e9d508a753db165400e
treec49ed65ab63c627f2a7f019db0660200f0bcddeb
parent70d7cffb7b3b084483d01345124abcecf1f67d7c
avoid panic's on attempted open's of non-existent devices

SCCS-vsn: sys/hp300/dev/sd.c 8.8
usr/src/sys/hp300/dev/sd.c