Re: Possible integer overflow in mach-bcmring with FPGA11107

From: Jiandong Zheng
Date: Mon Apr 23 2012 - 16:19:38 EST


On 4/23/2012 5:43 AM, Christian Dietrich wrote:

This seems totally innocent, but when doing the caluculation for
rate_hz by hand (or python) the result is slighly bigger than
2^32-1. Therfore an integer overflow should occur and the rate_hz rate
will be far too low. It may be that there is a sanity check in
hardware, but i don't know the used hardware at all.

Hi Christian,

Yes. This is a problem. I will cleanup fpga11107 code including this soon.

Thanks,
JD

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/