Messages in this thread | | | From | Juergen Beisert <> | Subject | Strange results of DIV_ROUND_CLOSEST | Date | Tue, 18 Dec 2012 16:03:41 +0100 |
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Hi list,
commit 263a523d18bca306016d75f5c8d5c57c37fe52fb changes the code of DIV_ROUND_CLOSEST in include/linux/kernel.h to fix a compile time warning.
But now feeding in a zero into this macro results into 4198403. Tested with gcc 4.4.3 and 4.7.2, on arch x86 and ARM.
I can reproduce this behaviour, when my ADC delivers a '0' value in the driver drivers/hwmon/s3c-hwmon.c in function s3c_hwmon_ch_show() with a current 3.7.1 kernel. The value is correct again, when the ADC delivers at least a '1'.
Any ideas how to fix it correctly?
jbe -- Pengutronix e.K. | Juergen Beisert | Linux Solutions for Science and Industry | http://www.pengutronix.de/ |
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