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drivers/perf: arm_pmu_acpi: Fix incorrect checking of gicc pointer
[ Upstream commit 3ba52ad55b
]
Fix bogus NULL checks on the return value of acpi_cpu_get_madt_gicc()
by checking for a 0 'gicc->performance_interrupt' value instead.
Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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parent
cb18f536e0
commit
f746a3d21f
1 changed files with 2 additions and 5 deletions
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@ -25,8 +25,6 @@ static int arm_pmu_acpi_register_irq(int cpu)
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int gsi, trigger;
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gicc = acpi_cpu_get_madt_gicc(cpu);
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if (WARN_ON(!gicc))
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return -EINVAL;
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gsi = gicc->performance_interrupt;
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@ -65,11 +63,10 @@ static void arm_pmu_acpi_unregister_irq(int cpu)
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int gsi;
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gicc = acpi_cpu_get_madt_gicc(cpu);
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if (!gicc)
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return;
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gsi = gicc->performance_interrupt;
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acpi_unregister_gsi(gsi);
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if (gsi)
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acpi_unregister_gsi(gsi);
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}
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static int arm_pmu_acpi_parse_irqs(void)
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