diff options
| author | Jean-Philippe Brucker | 2020-04-22 10:48:06 +0200 |
|---|---|---|
| committer | Will Deacon | 2020-05-18 18:22:58 +0100 |
| commit | 10f6cd2af21bb44faab31a50ec3361d7649e5a39 (patch) | |
| tree | ece8c289548a2fbc6d53c39e0c249cc7ae5e7b7e /arch/arm64 | |
| parent | 97807325a02b41de2f641d98dda1041549a23cd8 (diff) | |
pmu/smmuv3: Clear IRQ affinity hint on device removal
Currently when trying to remove the SMMUv3 PMU module we get a
WARN_ON_ONCE from free_irq(), because the affinity hint set during probe
hasn't been properly cleared.
[ 238.878383] WARNING: CPU: 0 PID: 175 at kernel/irq/manage.c:1744 free_irq+0x324/0x358
...
[ 238.897263] Call trace:
[ 238.897998] free_irq+0x324/0x358
[ 238.898792] devm_irq_release+0x18/0x28
[ 238.899189] release_nodes+0x1b0/0x228
[ 238.899984] devres_release_all+0x38/0x60
[ 238.900779] device_release_driver_internal+0x10c/0x1d0
[ 238.901574] driver_detach+0x50/0xe0
[ 238.902368] bus_remove_driver+0x5c/0xd8
[ 238.903448] driver_unregister+0x30/0x60
[ 238.903958] platform_driver_unregister+0x14/0x20
[ 238.905075] arm_smmu_pmu_exit+0x1c/0xecc [arm_smmuv3_pmu]
[ 238.905547] __arm64_sys_delete_module+0x14c/0x260
[ 238.906342] el0_svc_common.constprop.0+0x74/0x178
[ 238.907355] do_el0_svc+0x24/0x90
[ 238.907932] el0_sync_handler+0x11c/0x198
[ 238.908979] el0_sync+0x158/0x180
Just like the other perf drivers, clear the affinity hint before
releasing the device.
Fixes: 7d839b4b9e00 ("perf/smmuv3: Add arm64 smmuv3 pmu driver")
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20200422084805.237738-1-jean-philippe@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64')
0 files changed, 0 insertions, 0 deletions