[Coverity CID :216790] Division or modulo by zero in tests/drivers/can/timing/src/main.c

[zephyrbot]

Static code scan issues found in file:

https://github.com/zephyrproject-rtos/zephyr/tree/f91e9fba51e5da46ee5c6822f8656713d74a6ecf/tests/drivers/can/timing/src/main.c#L123

Category: Integer handling issues
Function: test_verify_algo
Component: Tests
CID: 216790

Details:

117             }
118    
119             zassert_true(ret >= 0, "Unknown error %d", ret);
120             /* For the given values, we expect a sp error < 10% */
121             zassert_true(ret < 100, "Huge sample point error %d", ret);
122             verify_sp(&timing, samples[i].sp, ret);
>>>     CID 216790:  Integer handling issues  (DIVIDE_BY_ZERO)
>>>     In function call "verify_bitrate", division by expression "timing.prescaler" which may be zero has undefined behavior.
123             verify_bitrate(&timing, samples[i].bitrate);
124         }
125     }
126    
127     void test_main(void)
128     {

Please fix or provide comments in coverity using the link:

https://scan9.coverity.com/reports.htm#v32951/p12996.

Note: This issue was created automatically. Priority was set based on classification
of the file affected and the impact field in coverity. Assignees were set using the CODEOWNERS file.

[nashif]

@alexanderwachter can you please take a look?