linux-kernel - usleep_range without a range

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Message-ID: <1518473028.22190.20.camel@perches.com>
Date:   Mon, 12 Feb 2018 14:03:48 -0800
From:   Joe Perches <joe@...ches.com>
To:     UlfHansson <ulf.hansson@...aro.org>,
        MichaelTurquette <mturquette@...libre.com>,
        StephenBoyd <sboyd@...nel.org>,
        "RafaelJ.Wysocki" <rjw@...ysocki.net>,
        VireshKumar <viresh.kumar@...aro.org>,
        BenjaminHerrenschmidt <benh@...nel.crashing.org>,
        PaulMackerras <paulus@...ba.org>,
        MichaelEllerman <mpe@...erman.id.au>,
        SakariAilus <sakari.ailus@....fi>,
        MauroCarvalhoChehab <mchehab@...nel.org>,
        SebastianReichel <sre@...nel.org>,
        GregKroah-Hartman <gregkh@...uxfoundation.org>,
        LiamGirdwood <lgirdwood@...il.com>,
        MarkBrown <broonie@...nel.org>, JaroslavKysela <perex@...ex.cz>,
        TakashiIwai <tiwai@...e.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-media@...r.kernel.org,
        devel@...verdev.osuosl.org, alsa-devel@...a-project.org
Subject: usleep_range without a range

scheduling can generally be better when these values are
not identical.  Perhaps these ranges should be expanded.

$ git grep -P -n "usleep_range\s*\(\s*([\w\.\>\-]+)\s*,\s*\1\s*\)"
drivers/clk/ux500/clk-sysctrl.c:45:             usleep_range(clk->enable_delay_us, clk->enable_delay_us);
drivers/cpufreq/pmac64-cpufreq.c:140:           usleep_range(1000, 1000);
drivers/cpufreq/pmac64-cpufreq.c:239:   usleep_range(10000, 10000); /* should be faster , to fix */
drivers/cpufreq/pmac64-cpufreq.c:284:           usleep_range(500, 500);
drivers/media/i2c/smiapp/smiapp-core.c:1228:    usleep_range(1000, 1000);
drivers/media/i2c/smiapp/smiapp-core.c:1235:    usleep_range(1000, 1000);
drivers/media/i2c/smiapp/smiapp-core.c:1240:    usleep_range(sleep, sleep);
drivers/media/i2c/smiapp/smiapp-core.c:1387:    usleep_range(5000, 5000);
drivers/media/i2c/smiapp/smiapp-quirk.c:205:    usleep_range(2000, 2000);
drivers/media/i2c/smiapp/smiapp-regs.c:279:             usleep_range(2000, 2000);
drivers/power/supply/ab8500_fg.c:643:   usleep_range(100, 100);
drivers/staging/rtl8192u/r819xU_phy.c:180:      usleep_range(1000, 1000);
drivers/staging/rtl8192u/r819xU_phy.c:736:                      usleep_range(1000, 1000);
drivers/staging/rtl8192u/r819xU_phy.c:740:                      usleep_range(1000, 1000);
sound/soc/codecs/ab8500-codec.c:1065:                   usleep_range(AB8500_ANC_SM_DELAY, AB8500_ANC_SM_DELAY);
sound/soc/codecs/ab8500-codec.c:1068:                   usleep_range(AB8500_ANC_SM_DELAY, AB8500_ANC_SM_DELAY);