arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt

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If a user unbinds an MSC after mpam_disable() has been run in response
to an error interrupt then a dereference of a NULL pointer occurs as
mpam_disable() sets the drvdata to NULL. Add an early return to the driver
remove callback to avoid this.

Fixes: f04046f257 ("arm_mpam: Add probe/remove for mpam msc driver and kbuild boiler plate")
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>

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Ben Horgan 2026-08-06 15:46:30 +01:00 • committed by Will Deacon

parent 2c43aced9b

commit fc996c3968

1 changed files with 3 additions and 0 deletions

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drivers/resctrl/mpam_devices.c

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