From 36a28e4a613bba376959a1b698ae0e1b23d52b59 Mon Sep 17 00:00:00 2001 From: Brian Masney Date: Thu, 6 Jul 2017 18:56:24 -0400 Subject: [PATCH] staging: iio: tsl2x7x: use usleep_range() instead of mdelay() This driver in some cases can busy wait for upwards of 15ms. Since the kernel at this point is not running in atomic context, and is running in process context, we can safely use usleep_range() instead. This patch changes the two occurrences of mdelay() to usleep_range(). Signed-off-by: Brian Masney Signed-off-by: Jonathan Cameron --- drivers/staging/iio/light/tsl2x7x.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c index d80f5dc..c38bd64 100644 --- a/drivers/staging/iio/light/tsl2x7x.c +++ b/drivers/staging/iio/light/tsl2x7x.c @@ -686,7 +686,8 @@ static int tsl2x7x_chip_on(struct iio_dev *indio_dev) } } - mdelay(3); /* Power-on settling time */ + /* Power-on settling time */ + usleep_range(3000, 3500); /* * NOW enable the ADC @@ -853,7 +854,7 @@ static void tsl2x7x_prox_cal(struct iio_dev *indio_dev) /*gather the samples*/ for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) { - mdelay(15); + usleep_range(15000, 17500); tsl2x7x_get_prox(indio_dev); prox_history[i] = chip->prox_data; dev_info(&chip->client->dev, "2 i=%d prox data= %d\n", -- 2.7.4