TRNG implementation for NUMAKER_PFM_NUC472 with GCC throws compilation warnings

[andresag01]

Description

• Type: Bug
• Priority: Minor

TRNG implementation for NUMAKER_PFM_NUC472 with GCC throws compilation warnings:

[Warning] trng_api.c@89,27: comparison between signed and unsigned integer expressions [-Wsign-compare]

---

Bug

Target
NUMAKER_PFM_NUC472

Toolchain:
GCC_ARM

Toolchain version:
5.4.1 20160609

mbed-cli version:
0.9.10

meed-os sha:
fc1f439 Merge pull request #3323 from andreaslarssonublox/ublox_odin_w2_drivers_update

Expected behavior
There should be no warnings

Actual behavior
Compiler outputs:

Compile [ 97.5%]: trng_api.c
[Warning] trng_api.c@89,27: comparison between signed and unsigned integer expressions [-Wsign-compare]

Steps to reproduce
mbed compile -m NUMAKER_PFM_NUC472 -t GCC_ARM

[0xc0170]

@ccli8

[cyliangtw]

Fix it in PR #3434

[cyliangtw]

@andresag01
@0xc0170
PR#3434 was accepted and merged.
So, please closed it.

[bridadan]

I'll go ahead and close this per @cyliangtw's recommendation. @andresag01 if you find the issue hasn't been resolved please reopen the issue.