[uml-devel] [PATCH 1/1] um: Fix broken IRQs if SPARSE_IRQ is selected

[uml-devel] [PATCH 1/1] um: Fix broken IRQs if SPARSE_IRQ is selected

[Sinan Nalkaya]

um: Kconfig.common: enabled SPARSE_IRQ.
um: kernel/irq: arch_probe_nr_irqs is implemented to prevent use of the default.

Signed-off-by: Sinan Nalkaya <sardok@gmail.com>
---
 arch/um/Kconfig.common |    1 +
 arch/um/kernel/irq.c   |    7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index 648121b..8335fdd 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -12,6 +12,7 @@ config UML
 	select GENERIC_CPU_DEVICES
 	select GENERIC_IO
 	select GENERIC_CLOCKEVENTS
+	select SPARSE_IRQ
 
 config MMU
 	bool
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 36e12f0..93615f0 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -356,6 +356,13 @@ void __init init_IRQ(void)
 		irq_set_chip_and_handler(i, &normal_irq_type, handle_edge_irq);
 }
 
+#ifdef CONFIG_SPARSE_IRQ
+int __init arch_probe_nr_irqs(void)
+{
+	return NR_IRQS;
+}
+#endif
+
 /*
  * IRQ stack entry and exit:
  *
-- 
1.7.10.4


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