firmware: arm_scmi: Roll back partial protocol table registration

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scmi_protocol_table_register() can leave earlier requests registered when
a later entry in the same ID table fails. Each request retains a pointer
to the driver's ID table, so a failed module load can leave a dangling
pointer after the module storage is released.

Unrequest only the successfully registered prefix, in reverse order,
before returning the failure. Leave the failed entry and the remaining
entries untouched because matching requests can be owned by another
driver.

Fixes: 2858f6e5f0 ("firmware: arm_scmi: Add multiple protocols registration support")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://patch.msgid.link/20260722173521.2184378-1-sudeep.holla@kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>

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Sudeep Holla 2026-07-22 18:35:20 +01:00

parent 2c4097e6c4

commit 2224b62226

1 changed files with 20 additions and 11 deletions

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drivers/firmware/arm_scmi/bus.c

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