return ret;
}
-static int css_interpret_ccw(SubchDev *sch, hwaddr ccw_addr)
+static int css_interpret_ccw(SubchDev *sch, hwaddr ccw_addr,
+ bool suspend_allowed)
{
int ret;
bool check_len;
}
if (ccw.flags & CCW_FLAG_SUSPEND) {
- return -EINPROGRESS;
+ return suspend_allowed ? -EINPROGRESS : -EINVAL;
}
check_len = !((ccw.flags & CCW_FLAG_SLI) && !(ccw.flags & CCW_FLAG_DC));
SCSW *s = &sch->curr_status.scsw;
int path;
int ret;
+ bool suspend_allowed;
/* Path management: In our simple css, we always choose the only path. */
path = 0x80;
}
sch->ccw_fmt_1 = !!(orb->ctrl0 & ORB_CTRL0_MASK_FMT);
sch->ccw_no_data_cnt = 0;
+ suspend_allowed = !!(orb->ctrl0 & ORB_CTRL0_MASK_SPND);
} else {
s->ctrl &= ~(SCSW_ACTL_SUSP | SCSW_ACTL_RESUME_PEND);
+ /* The channel program had been suspended before. */
+ suspend_allowed = true;
}
sch->last_cmd_valid = false;
do {
- ret = css_interpret_ccw(sch, sch->channel_prog);
+ ret = css_interpret_ccw(sch, sch->channel_prog, suspend_allowed);
switch (ret) {
case -EAGAIN:
/* ccw chain, continue processing */