v4.19.13 snapshot.
diff --git a/kernel/irq/settings.h b/kernel/irq/settings.h
new file mode 100644
index 0000000..e43795c
--- /dev/null
+++ b/kernel/irq/settings.h
@@ -0,0 +1,169 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Internal header to deal with irq_desc->status which will be renamed
+ * to irq_desc->settings.
+ */
+enum {
+ _IRQ_DEFAULT_INIT_FLAGS = IRQ_DEFAULT_INIT_FLAGS,
+ _IRQ_PER_CPU = IRQ_PER_CPU,
+ _IRQ_LEVEL = IRQ_LEVEL,
+ _IRQ_NOPROBE = IRQ_NOPROBE,
+ _IRQ_NOREQUEST = IRQ_NOREQUEST,
+ _IRQ_NOTHREAD = IRQ_NOTHREAD,
+ _IRQ_NOAUTOEN = IRQ_NOAUTOEN,
+ _IRQ_MOVE_PCNTXT = IRQ_MOVE_PCNTXT,
+ _IRQ_NO_BALANCING = IRQ_NO_BALANCING,
+ _IRQ_NESTED_THREAD = IRQ_NESTED_THREAD,
+ _IRQ_PER_CPU_DEVID = IRQ_PER_CPU_DEVID,
+ _IRQ_IS_POLLED = IRQ_IS_POLLED,
+ _IRQ_DISABLE_UNLAZY = IRQ_DISABLE_UNLAZY,
+ _IRQF_MODIFY_MASK = IRQF_MODIFY_MASK,
+};
+
+#define IRQ_PER_CPU GOT_YOU_MORON
+#define IRQ_NO_BALANCING GOT_YOU_MORON
+#define IRQ_LEVEL GOT_YOU_MORON
+#define IRQ_NOPROBE GOT_YOU_MORON
+#define IRQ_NOREQUEST GOT_YOU_MORON
+#define IRQ_NOTHREAD GOT_YOU_MORON
+#define IRQ_NOAUTOEN GOT_YOU_MORON
+#define IRQ_NESTED_THREAD GOT_YOU_MORON
+#define IRQ_PER_CPU_DEVID GOT_YOU_MORON
+#define IRQ_IS_POLLED GOT_YOU_MORON
+#define IRQ_DISABLE_UNLAZY GOT_YOU_MORON
+#undef IRQF_MODIFY_MASK
+#define IRQF_MODIFY_MASK GOT_YOU_MORON
+
+static inline void
+irq_settings_clr_and_set(struct irq_desc *desc, u32 clr, u32 set)
+{
+ desc->status_use_accessors &= ~(clr & _IRQF_MODIFY_MASK);
+ desc->status_use_accessors |= (set & _IRQF_MODIFY_MASK);
+}
+
+static inline bool irq_settings_is_per_cpu(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_PER_CPU;
+}
+
+static inline bool irq_settings_is_per_cpu_devid(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_PER_CPU_DEVID;
+}
+
+static inline void irq_settings_set_per_cpu(struct irq_desc *desc)
+{
+ desc->status_use_accessors |= _IRQ_PER_CPU;
+}
+
+static inline void irq_settings_set_no_balancing(struct irq_desc *desc)
+{
+ desc->status_use_accessors |= _IRQ_NO_BALANCING;
+}
+
+static inline bool irq_settings_has_no_balance_set(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_NO_BALANCING;
+}
+
+static inline u32 irq_settings_get_trigger_mask(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & IRQ_TYPE_SENSE_MASK;
+}
+
+static inline void
+irq_settings_set_trigger_mask(struct irq_desc *desc, u32 mask)
+{
+ desc->status_use_accessors &= ~IRQ_TYPE_SENSE_MASK;
+ desc->status_use_accessors |= mask & IRQ_TYPE_SENSE_MASK;
+}
+
+static inline bool irq_settings_is_level(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_LEVEL;
+}
+
+static inline void irq_settings_clr_level(struct irq_desc *desc)
+{
+ desc->status_use_accessors &= ~_IRQ_LEVEL;
+}
+
+static inline void irq_settings_set_level(struct irq_desc *desc)
+{
+ desc->status_use_accessors |= _IRQ_LEVEL;
+}
+
+static inline bool irq_settings_can_request(struct irq_desc *desc)
+{
+ return !(desc->status_use_accessors & _IRQ_NOREQUEST);
+}
+
+static inline void irq_settings_clr_norequest(struct irq_desc *desc)
+{
+ desc->status_use_accessors &= ~_IRQ_NOREQUEST;
+}
+
+static inline void irq_settings_set_norequest(struct irq_desc *desc)
+{
+ desc->status_use_accessors |= _IRQ_NOREQUEST;
+}
+
+static inline bool irq_settings_can_thread(struct irq_desc *desc)
+{
+ return !(desc->status_use_accessors & _IRQ_NOTHREAD);
+}
+
+static inline void irq_settings_clr_nothread(struct irq_desc *desc)
+{
+ desc->status_use_accessors &= ~_IRQ_NOTHREAD;
+}
+
+static inline void irq_settings_set_nothread(struct irq_desc *desc)
+{
+ desc->status_use_accessors |= _IRQ_NOTHREAD;
+}
+
+static inline bool irq_settings_can_probe(struct irq_desc *desc)
+{
+ return !(desc->status_use_accessors & _IRQ_NOPROBE);
+}
+
+static inline void irq_settings_clr_noprobe(struct irq_desc *desc)
+{
+ desc->status_use_accessors &= ~_IRQ_NOPROBE;
+}
+
+static inline void irq_settings_set_noprobe(struct irq_desc *desc)
+{
+ desc->status_use_accessors |= _IRQ_NOPROBE;
+}
+
+static inline bool irq_settings_can_move_pcntxt(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_MOVE_PCNTXT;
+}
+
+static inline bool irq_settings_can_autoenable(struct irq_desc *desc)
+{
+ return !(desc->status_use_accessors & _IRQ_NOAUTOEN);
+}
+
+static inline bool irq_settings_is_nested_thread(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_NESTED_THREAD;
+}
+
+static inline bool irq_settings_is_polled(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_IS_POLLED;
+}
+
+static inline bool irq_settings_disable_unlazy(struct irq_desc *desc)
+{
+ return desc->status_use_accessors & _IRQ_DISABLE_UNLAZY;
+}
+
+static inline void irq_settings_clr_disable_unlazy(struct irq_desc *desc)
+{
+ desc->status_use_accessors &= ~_IRQ_DISABLE_UNLAZY;
+}