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tests: drivers: can: timing: Fix potential div by zero

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If the prescaler is zero in the test, a div by zero would happen.
Add an assert to check for zero prescaler.
Fix CID 216790

Signed-off-by: Alexander Wachter <alexander@wachter.cloud>
This commit is contained in:
Alexander Wachter 2021-02-10 17:18:16 +01:00 • committed by Anas Nashif
commit 9f858ac1b6
1 changed files with 2 additions and 0 deletions
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tests/drivers/can/timing/src/main.c
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@ -61,6 +61,8 @@ static void verify_bitrate(struct can_timing *timing, uint32_t bitrate)
uint32_t bitrate_calc; uint32_t bitrate_calc;
int ret; int ret;
zassert_not_equal(timing->prescaler, 0, "Prescaler is zero");
ret = can_get_core_clock(can_dev, &core_clock); ret = can_get_core_clock(can_dev, &core_clock);
zassert_equal(ret, 0, "Unable to get core clock"); zassert_equal(ret, 0, "Unable to get core clock");