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spi: cadence-quadspi: Assume device could match via platform

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Driver has only of_device_id table, however it also has MODULE_ALIAS()
for platform name, thus assume there is a configuration where this can
be loaded outside of OF system.  In such case of_device_get_match_data()
will return NULL, which is already checked in one place of probe()
function but not in the other, leading to Smatch warning:

  drivers/spi/spi-cadence-quadspi.c:1942 cqspi_probe() error: we previously assumed 'ddata' could be null (see line 1885)

Driver should be consistent, so assume device can be matched via
platform bus and of_device_get_match_data() can indeed return NULL.
This is also possible with malformed DTS on OF-platform: no unit address
and device node name matching driver name.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250501-n-smatch-fixes-v2-3-d2ad9c1f2e67@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2025-05-01 17:02:01 +02:00 committed by Mark Brown
parent f4ea37a485
commit 222a87f6b9
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1 changed files with 1 additions and 1 deletions
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2
drivers/spi/spi-cadence-quadspi.c
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@ -1949,7 +1949,7 @@ static int cqspi_probe(struct platform_device *pdev)
host->num_chipselect = cqspi->num_chipselect;
if (ddata->quirks & CQSPI_SUPPORT_DEVICE_RESET)
if (ddata && (ddata->quirks & CQSPI_SUPPORT_DEVICE_RESET))
cqspi_device_reset(cqspi);
if (cqspi->use_direct_mode) {