ARM: perf: check that we have a platform device when reserving PMU
Attempting to use a hardware counter on a platform with a supported PMU but where the platform_device (defining the interrupts) has not been registered results in a NULL pointer dereference. This patch fixes the problem by checking that we actually have a platform device registered before attempting to grab the interrupts. Reported-by:Pawel Moll <pawel.moll@arm.com> Signed-off-by:
Will Deacon <will.deacon@arm.com>
parent
bce34d14
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