spi: atcspi200: fix mutex initialization order

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The atcspi_exec_mem_op() function may call mutex_lock() on the
driver's mutex before it is properly initialized if a SPI memory
operation is initiated immediately after devm_spi_register_controller()
is called. The mutex initialization currently occurs after the
controller registration, which leaves a window where the mutex could
be used uninitialized.

Move the mutex initialization to the beginning of the probe function,
before any registration or resource allocation.

Fixes: 34e3815ea4 ("spi: atcspi200: Add ATCSPI200 SPI controller driver")
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Link: https://patch.msgid.link/15a71241affc25108a97d40d9d3dd1bc3d2d69ed.1773282905.git.xiaopei01@kylinos.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

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Pei Xiao 2026-03-12 10:47:55 +08:00 • committed by Mark Brown

parent 97545e3723

commit 869d5b4b2a

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drivers/spi/spi-atcspi200.c

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