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Make sure the last command byte makes it onto the wire.

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This commit is contained in:
Poul-Henning Kamp 2005-02-11 22:24:02 +00:00
parent 0a1a279e93
commit 09dbf9afd3
1 changed files with 7 additions and 5 deletions
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12
sys/dev/ieee488/upd7210.c
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@ -347,14 +347,16 @@ gpib_ib_irq(struct upd7210 *u)
ib = u->ibfoo;
if ((u->rreg[ISR2] & IXR2_CO) && ib->cmdlen > 0) {
if ((u->rreg[ISR2] & IXR2_CO) && ib->cmdbuf != NULL) {
if (ib->cmdlen == 0) {
wakeup(ib);
ib->cmdbuf = NULL;
write_reg(u, IMR2, 0);
return (1);
}
write_reg(u, CDOR, *ib->cmdbuf);
ib->cmdbuf++;
ib->cmdlen--;
if (ib->cmdlen == 0) {
wakeup(ib);
write_reg(u, IMR2, 0);
}
return (1);
}
if ((u->rreg[ISR1] & IXR1_DO) && ib->dobuf != NULL) {