Commit cd5c08fb authored by Duncan Sands's avatar Duncan Sands Committed by Greg Kroah-Hartman

[PATCH] USB ATM: robustify poll throttling

No functional change, but less likely to break in the future.
Signed-off-by: default avatarDuncan Sands <baldrick@free.fr>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 322a95bc
...@@ -430,13 +430,11 @@ static void speedtch_check_status(struct speedtch_instance_data *instance) ...@@ -430,13 +430,11 @@ static void speedtch_check_status(struct speedtch_instance_data *instance)
ret = speedtch_read_status(instance); ret = speedtch_read_status(instance);
if (ret < 0) { if (ret < 0) {
atm_warn(usbatm, "error %d fetching device status\n", ret); atm_warn(usbatm, "error %d fetching device status\n", ret);
if (instance->poll_delay < MAX_POLL_DELAY) instance->poll_delay = min(2 * instance->poll_delay, MAX_POLL_DELAY);
instance->poll_delay *= 2;
return; return;
} }
if (instance->poll_delay > MIN_POLL_DELAY) instance->poll_delay = max(instance->poll_delay / 2, MIN_POLL_DELAY);
instance->poll_delay /= 2;
atm_dbg(usbatm, "%s: line state %02x\n", __func__, buf[OFFSET_7]); atm_dbg(usbatm, "%s: line state %02x\n", __func__, buf[OFFSET_7]);
......
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