From cd5c08fb7b0d960b7cd48bc977feee7b3bd8b046 Mon Sep 17 00:00:00 2001 From: Duncan Sands Date: Thu, 23 Jun 2005 09:23:10 +0200 Subject: [PATCH] USB ATM: robustify poll throttling No functional change, but less likely to break in the future. Signed-off-by: Duncan Sands Signed-off-by: Greg Kroah-Hartman --- drivers/usb/atm/speedtch.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/usb/atm') diff --git a/drivers/usb/atm/speedtch.c b/drivers/usb/atm/speedtch.c index 992db1c..03a0e99 100644 --- a/drivers/usb/atm/speedtch.c +++ b/drivers/usb/atm/speedtch.c @@ -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]); -- cgit v1.1