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In __of_find_n_match_cpu_property(), checking the variable ac for 0 won't
prevent a possible overflow when multiplying it by sizeof(*cell). Besides,
of_read_number() (called in the *for* loop) can't return correct result if
that variable (which equals the #address-cells prop's value) exceeds 2, so
additionally checking for that seems logical...
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
Fixes: f3cea45a77c8 ("of: Fix iteration bug over CPU reg properties")
Signed-off-by: Sergey Shtylyov <s.shtylyov@auroraos.dev>
Link: https://patch.msgid.link/0c7bf7e9-887c-42d5-bcfb-0ba7fe1e70b6@auroraos.dev
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Functions which don't change the refcount or otherwise modify struct
device_node can make struct device_node const.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241010-dt-const-v1-3-87a51f558425@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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drivers/of/base.c is quite long and we've accumulated a number of CPU
node functions. Let's move them to a new file, cpu.c, along with the
lone of_cpu_device_node_get() in of_device.h. Moving the declaration has
no effect yet as of.h is included by of_device.h. This serves as
preparation to disentangle the includes in of_device.h and
of_platform.h.
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20230329-dt-cpu-header-cleanups-v1-4-581e2605fe47@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
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