[Coverity CID :203434]Control flow issues in /drivers/timer/xlnx_psttc_timer.c

[aasthagr]

Static code scan issues seen in File: /drivers/timer/xlnx_psttc_timer.c
Category: Control flow issues
Function: xttc_calculate_interval
Component: Drivers
CID: 203434
Please fix or provide comments to square it off in coverity in the link: https://scan9.coverity.com/reports.htm#v32951/p12996

[aescolar]

@bbolen this code came from your PR #9316 from this commit 4ef9d4b , could you take a look at it?

[bbolen]

Yes, I'll take a look.

[galak]

@bbolen looks like not a bug, but will let you look in more detail.

[LeiW000]

We should ignore it in coverity. It is possible that "TIMER_INPUT_CLKHZ" is defined with a very large number by user in qemu_cortex_r5.dts.

I have updated "CID 203434" in coverity to ignore it. So, I think we can close the issue now.