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

drivers/usb/atm/speedtch.c

+2 −4
Original line number Diff line number Diff line
@@ -430,13 +430,11 @@ static void speedtch_check_status(struct speedtch_instance_data *instance) 
	ret = speedtch_read_status(instance);

	if (ret < 0) {

		atm_warn(usbatm, "error %d fetching device status\n", ret);

		if (instance->poll_delay < MAX_POLL_DELAY)

			instance->poll_delay *= 2;

		instance->poll_delay = min(2 * instance->poll_delay, MAX_POLL_DELAY);

		return;

	}



	if (instance->poll_delay > MIN_POLL_DELAY)

		instance->poll_delay /= 2;

	instance->poll_delay = max(instance->poll_delay / 2, MIN_POLL_DELAY);



	atm_dbg(usbatm, "%s: line state %02x\n", __func__, buf[OFFSET_7]);