[PATCH 10/11] rt2800: replace msleep() with usleep_range() on channel switch
From: Stanislaw Gruszka <hidden>
Date: 2016-12-19 10:55:14
Subsystem:
ralink rt2x00 wireless lan driver, the rest · Maintainers:
Stanislaw Gruszka, Linus Torvalds
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 <redacted> --- 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
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1.7.1