tests: spi: spi_loopback fails with test_spi_null_rx_buf_set

[hakehuang]

Describe the bug

test_spi_null_rx_buf_set fails on several NXP platforms

Please also mention any information which could help others to understand
the problem you're facing:

• What target platform are you using?
• frdm_ke17z/frdm_ke17z512/frdm_k64f/rd_rw612_bga/frdm_rw612
• What have you tried to diagnose or workaround this issue?
• git bisect
• Is this a regression? If yes, have you been able to "git bisect" it to a
  specific commit?

b983b0441b4ad6f11edfb678c09dc7237570c5e4 is the first bad commit
commit b983b0441b4ad6f11edfb678c09dc7237570c5e4
Author: Piotr Krzyzanowski <[email protected]>
Date:   Mon Mar 24 22:58:15 2025 +0100

    tests: drivers: spi: Add NULL spi_buf_set tests

    Add test cases where spi_transceive gets NULL spi_buf_set
    once for tx and once for rx.

    Signed-off-by: Piotr Krzyzanowski <[email protected]>

 tests/drivers/spi/spi_loopback/src/spi.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

To Reproduce

scripts/twister --device-testing --hardware-map map.yaml -T tests/drivers/spi/spi_loopback/

Expected behavior

test PASS

Impact

spi over flexspi

Logs and console output

*** Booting Zephyr OS build v4.1.0-2445-g246f02b09460 ***
SPI test on buffers TX/RX 0x20004380/0x20004360, frame size = 8, DMA enabled (without CONFIG_NOCACHE_MEMORY)
Polling...Running TESTSUITE spi_extra_api_features
===================================================================
START - test_spi_lock_release
 PASS - test_spi_lock_release in 0.002 seconds
===================================================================
TESTSUITE spi_extra_api_features succeeded
Running TESTSUITE spi_extra_api_features
===================================================================
START - test_spi_lock_release
 PASS - test_spi_lock_release in 0.002 seconds
===================================================================
TESTSUITE spi_extra_api_features succeeded
Running TESTSUITE spi_loopback
===================================================================
Testing loopback spec: SLOW
START - test_nop_nil_bufs
 PASS - test_nop_nil_bufs in 0.001 seconds
===================================================================
START - test_spi_async_call
 PASS - test_spi_async_call in 0.235 seconds
===================================================================
START - test_spi_complete_large_transfers
 PASS - test_spi_complete_large_transfers in 0.232 seconds
===================================================================
START - test_spi_complete_loop
 PASS - test_spi_complete_loop in 0.001 seconds
===================================================================
START - test_spi_complete_multiple
 PASS - test_spi_complete_multiple in 0.002 seconds
===================================================================
START - test_spi_null_rx_buf_set
E: Transfer could not start
E: Timeout waiting for transfer complete

    Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/spi/spi_loopback/src/spi.c:109: spi_loopback_transceive: (ret is true)
SPI transceive failed, code -116
 FAIL - test_spi_null_rx_buf_set in 0.221 seconds
===================================================================
START - test_spi_null_tx_buf
 PASS - test_spi_null_tx_buf in 0.001 seconds
===================================================================
START - test_spi_null_tx_buf_set
 PASS - test_spi_null_tx_buf_set in 0.001 seconds
===================================================================
START - test_spi_rx_bigger_than_tx
 PASS - test_spi_rx_bigger_than_tx in 0.001 seconds
===================================================================
START - test_spi_rx_every_4
 PASS - test_spi_rx_every_4 in 0.001 seconds
===================================================================
START - test_spi_rx_half_end
 PASS - test_spi_rx_half_end in 0.001 seconds
===================================================================
START - test_spi_rx_half_start
 PASS - test_spi_rx_half_start in 0.001 seconds
===================================================================
TESTSUITE spi_loopback failed.
Running TESTSUITE spi_loopback
===================================================================
Testing loopback spec: FAST
START - test_nop_nil_bufs
 PASS - test_nop_nil_bufs in 0.001 seconds
===================================================================
START - test_spi_async_call
 PASS - test_spi_async_call in 0.144 seconds
===================================================================
START - test_spi_complete_large_transfers
 PASS - test_spi_complete_large_transfers in 0.141 seconds
===================================================================
START - test_spi_complete_loop
 PASS - test_spi_complete_loop in 0.001 seconds
===================================================================
START - test_spi_complete_multiple
 PASS - test_spi_complete_multiple in 0.002 seconds
===================================================================
START - test_spi_null_rx_buf_set
E: Transfer could not start
E: Timeout waiting for transfer complete

    Assertion failed at WEST_TOPDIR/zephyr/tests/drivers/spi/spi_loopback/src/spi.c:109: spi_loopback_transceive: (ret is true)
SPI transceive failed, code -116
 FAIL - test_spi_null_rx_buf_set in 0.221 seconds
===================================================================
START - test_spi_null_tx_buf
 PASS - test_spi_null_tx_buf in 0.001 seconds
===================================================================
START - test_spi_null_tx_buf_set
 PASS - test_spi_null_tx_buf_set in 0.001 seconds
===================================================================
START - test_spi_rx_bigger_than_tx
 PASS - test_spi_rx_bigger_than_tx in 0.001 seconds
===================================================================
START - test_spi_rx_every_4
 PASS - test_spi_rx_every_4 in 0.001 seconds
===================================================================
START - test_spi_rx_half_end
 PASS - test_spi_rx_half_end in 0.001 seconds
===================================================================
START - test_spi_rx_half_start
 PASS - test_spi_rx_half_start in 0.001 seconds
===================================================================
TESTSUITE spi_loopback failed.

------ TESTSUITE SUMMARY START ------

SUITE PASS - 100.00% [spi_extra_api_features]: pass = 1, fail = 0, skip = 0, total = 1 duration = 0.002 seconds
 - PASS - [spi_extra_api_features.test_spi_lock_release] duration = 0.002 seconds

SUITE FAIL -  91.67% [spi_loopback]: pass = 11, fail = 1, skip = 0, total = 12 duration = 0.698 seconds
 - PASS - [spi_loopback.test_nop_nil_bufs] duration = 0.001 seconds
 - PASS - [spi_loopback.test_spi_async_call] duration = 0.235 seconds
 - PASS - [spi_loopback.test_spi_complete_large_transfers] duration = 0.232 seconds
 - PASS - [spi_loopback.test_spi_complete_loop] duration = 0.001 seconds
 - PASS - [spi_loopback.test_spi_complete_multiple] duration = 0.002 seconds
 - FAIL - [spi_loopback.test_spi_null_rx_buf_set] duration = 0.221 seconds
 - PASS - [spi_loopback.test_spi_null_tx_buf] duration = 0.001 seconds
 - PASS - [spi_loopback.test_spi_null_tx_buf_set] duration = 0.001 seconds
 - PASS - [spi_loopback.test_spi_rx_bigger_than_tx] duration = 0.001 seconds
 - PASS - [spi_loopback.test_spi_rx_every_4] duration = 0.001 seconds
 - PASS - [spi_loopback.test_spi_rx_half_end] duration = 0.001 seconds
 - PASS - [spi_loopback.test_spi_rx_half_start] duration = 0.001 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
RunID: c7ffdb2648f21a877a72ffdc41103a86
PROJECT EXECUTION FAILED

Environment (please complete the following information):

• OS: (e.g. Linux, MacOS, Windows)
• Toolchain (e.g Zephyr SDK, ...)
• Commit SHA or Version used: v4.1.0-2494-g86293ebe114