static void warn_poll_past_due(struct mcp2210_device *dev, unsigned long now,
long how_late)
{
mcp2210_warn("Next poll is past due by %ums.\n",
jiffies_to_msecs(how_late));
if (!poll_delay_warn_secs)
return;
/* If result ends up zero then it'll just repeat once */
dev->suppress_poll_warn = now + msecs_to_jiffies(1000
* poll_delay_warn_secs);
mcp2210_warn("...suppressing for %u seconds.\n", poll_delay_warn_secs);
}
static int complete_poll(struct mcp2210_cmd *cmd_head, void *context)
{
struct mcp2210_device *dev = cmd_head->dev;
struct mcp2210_cmd_ctl *cmd = (void*)cmd_head;
int enabled;
unsigned long interval;
unsigned long now = jiffies;
mcp2210_debug();
if (dev->dead)
return -EINPROGRESS;
if (cmd->req.cmd == MCP2210_CMD_GET_PIN_VALUE) {
enabled = dev->s.poll_gpio;
interval = dev->config->poll_gpio_usecs;
dev->s.last_poll_gpio = now;
} else {
enabled = dev->s.poll_intr;
interval = dev->config->poll_intr_usecs;
dev->s.last_poll_intr = now;
}
if (!enabled)
return -EINPROGRESS;
if (1) {
unsigned long interval_j = usecs_to_jiffies(interval);
unsigned long next = dev->eps[EP_OUT].submit_time + interval_j;
cmd->head.delayed = 1;
if (jiffdiff(next, now) < 0) {
mcp2210_warn("poll interval collapse, restarting universe");
next = jiffies + interval_j;
}
cmd->head.delay_until = next;
#if 0
mcp2210_debug("interval_j: %lu, submit_time: %lu, next: %lu, jiffies: %lu",
interval_j, dev->eps[EP_OUT].submit_time, next, jiffies);
#endif
}
cmd->head.state = MCP2210_STATE_NEW;
mcp2210_add_cmd(cmd_head, false);
return -EINPROGRESS; /* tell process_commands not to free us */
}
