]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
drivers/perf: arm_pmu: Fix NULL pointer dereference during probe
authorStefan Wahren <stefan.wahren@i2se.com>
Sat, 27 Aug 2016 16:19:50 +0000 (16:19 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Fri, 2 Sep 2016 16:17:52 +0000 (17:17 +0100)
commit63fb0a9516b2c4e23293d7253c14c40aa9c2b7d1
tree6f711796620e53c304f02123168491060284de11
parent753246840d012ae34ea80a1d40bc1546c62fb957
drivers/perf: arm_pmu: Fix NULL pointer dereference during probe

Patch 7f1d642fbb5c ("drivers/perf: arm-pmu: Fix handling of SPI lacking
interrupt-affinity property") unintended also fixes perf_event support
for bcm2835 which doesn't have PMU interrupts. Unfortunately this change
introduce a NULL pointer dereference on bcm2835, because irq_is_percpu
always expected to be called with a valid IRQ. So fix this regression
by validating the IRQ before.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: 7f1d642fbb5c ("drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property")
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
drivers/perf/arm_pmu.c