From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com ([192.55.52.115]:50025 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753145AbbFCIcQ (ORCPT ); Wed, 3 Jun 2015 04:32:16 -0400 From: Daniel Baluta To: jic23@kernel.org Cc: daniel.baluta@intel.com, pmeerw@pmeerw.net, knaack.h@gmx.de, lars@metafoo.de, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org Subject: [PATCH 4/6] iio: magnetometer: mmc35240: Use a smaller sleep value Date: Wed, 3 Jun 2015 11:33:56 +0300 Message-Id: <1433320438-23870-5-git-send-email-daniel.baluta@intel.com> In-Reply-To: <1433320438-23870-1-git-send-email-daniel.baluta@intel.com> References: <1433320438-23870-1-git-send-email-daniel.baluta@intel.com> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org According to datasheet, Page 8, minimum wait time to complete measurement is 10ms. Adjusting this value will increase the userspace polling rate. Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240") Signed-off-by: Daniel Baluta --- drivers/iio/magnetometer/mmc35240.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c index c520117..35eb6fd 100644 --- a/drivers/iio/magnetometer/mmc35240.c +++ b/drivers/iio/magnetometer/mmc35240.c @@ -219,7 +219,8 @@ static int mmc35240_take_measurement(struct mmc35240_data *data) return ret; if (reg_status & MMC35240_STATUS_MEAS_DONE_BIT) break; - msleep(20); + /* minimum wait time to complete measurement is 10 ms */ + usleep_range(10000, 11000); } if (tries < 0) { -- 1.9.1