From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]:36640 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758363AbcLSKzO (ORCPT ); Mon, 19 Dec 2016 05:55:14 -0500 From: Stanislaw Gruszka To: linux-wireless@vger.kernel.org Cc: Helmut Schaa , Stanislaw Gruszka Subject: [PATCH 10/11] rt2800: replace msleep() with usleep_range() on channel switch Date: Mon, 19 Dec 2016 11:52:56 +0100 Message-Id: <1482144777-16760-11-git-send-email-sgruszka@redhat.com> (sfid-20161219_120239_378724_FC90D445) In-Reply-To: <1482144777-16760-1-git-send-email-sgruszka@redhat.com> References: <1482144777-16760-1-git-send-email-sgruszka@redhat.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: msleep(1) can sleep much more time then requested 1ms, this is not good on channel switch, which we want to be performed fast (i.e. to make scan faster). Replace msleep() with usleep_range(), which has much smaller maximum sleeping time boundary. Signed-off-by: Stanislaw Gruszka --- drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index 29d98e4..0220184 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -2110,7 +2110,9 @@ static void rt2800_config_channel_rf3xxx(struct rt2x00_dev *rt2x00dev, rt2800_rfcsr_read(rt2x00dev, 30, &rfcsr); rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 1); rt2800_rfcsr_write(rt2x00dev, 30, rfcsr); - msleep(1); + + usleep_range(1000, 1500); + rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 0); rt2800_rfcsr_write(rt2x00dev, 30, rfcsr); } @@ -3442,7 +3444,7 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev, } } - msleep(1); + usleep_range(1000, 1500); /* * Clear channel statistic counters -- 1.7.1