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authorStefan Agner <stefan@agner.ch>2018-07-07 23:16:56 +0200
committerWill Deacon <will.deacon@arm.com>2018-07-09 13:29:43 +0100
commit64b2f025715a68bed49fb14588c2d893dfbd00a8 (patch)
tree2e0212310846e63316e1eaa82f4c6d2180e20dd6 /drivers/perf
parent59b62e7ad0874681dc4f84cac90cc991dc265809 (diff)
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arm: perf: prevent unbind/bind via sysfs
Unbinding and rebinding the ARM PMU driver via sysfs leads to a warning followed by more errors: WARNING: CPU: 0 PID: 217 at kernel/irq/chip.c:1034 irq_modify_status+0x150/0x16c .. genirq: Flags mismatch irq 19. 00010c04 (arm-pmu) vs. 00010c04 (arm-pmu) hw perfevents: unable to request IRQ19 for ARM PMU counters hw perfevents: /pmu: failed to register PMU devices! armv7-pmu: probe of pmu failed with error -16 The driver is clearly not designed to be removed. Disable bind/ unbind for this driver. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/perf')
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