From: Vlad Dogaru <vlad.dogaru@intel.com>
Date: Thu, 23 Oct 2014 14:52:00 +0000 (+0100)
Subject: bmp280: use correct routine for division
X-Git-Tag: firefly_0821_release~176^2~2665^2~446^2~15
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=46ee98a206c1fa6fc394791fb6188a47820a80b5;p=firefly-linux-kernel-4.4.55.git

bmp280: use correct routine for division

The proper way to divide two signed 64-bit values is to use div64_s64.

Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---

diff --git a/drivers/iio/pressure/bmp280.c b/drivers/iio/pressure/bmp280.c
index fb91cb35b331..ce29ff91bce7 100644
--- a/drivers/iio/pressure/bmp280.c
+++ b/drivers/iio/pressure/bmp280.c
@@ -239,7 +239,7 @@ static u32 bmp280_compensate_press(struct bmp280_data *data,
 		return 0;
 
 	p = ((((s64) 1048576 - adc_press) << 31) - var2) * 3125;
-	do_div(p, var1);
+	p = div64_s64(p, var1);
 	var1 = (((s64) comp->dig_p9) * (p >> 13) * (p >> 13)) >> 25;
 	var2 = (((s64) comp->dig_p8) * p) >> 19;
 	p = ((p + var1 + var2) >> 8) + (((s64) comp->dig_p7) << 4);