Merge tag 'irq-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "Updates for the interrupt subsystem:

  Core changes:

   - Prevent a potential deadlock when initial priority is assigned to a
     newly created interrupt thread. A recent change to plug a race
     between cpuset and __sched_setscheduler() introduced a new lock
     dependency which is now triggered. Break the lock dependency chain
     by moving the priority assignment to the thread function.

   - A couple of small updates to make the irq core RT safe.

   - Confine the irq_cpu_online/offline() API to the only left unfixable
     user Cavium Octeon so that it does not grow new usage.

   - A small documentation update

  Driver changes:

   - A large cross architecture rework to move irq_enter/exit() into the
     architecture code to make addressing the NOHZ_FULL/RCU issues
     simpler.

   - The obligatory new irq chip driver for Microchip EIC

   - Modularize a few irq chip drivers

   - Expand usage of devm_*() helpers throughout the driver code

   - The usual small fixes and improvements all over the place"

* tag 'irq-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits)
  h8300: Fix linux/irqchip.h include mess
  dt-bindings: irqchip: renesas-irqc: Document r8a774e1 bindings
  MIPS: irq: Avoid an unused-variable error
  genirq: Hide irq_cpu_{on,off}line() behind a deprecated option
  irqchip/mips-gic: Get rid of the reliance on irq_cpu_online()
  MIPS: loongson64: Drop call to irq_cpu_offline()
  irq: remove handle_domain_{irq,nmi}()
  irq: remove CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
  irq: riscv: perform irqentry in entry code
  irq: openrisc: perform irqentry in entry code
  irq: csky: perform irqentry in entry code
  irq: arm64: perform irqentry in entry code
  irq: arm: perform irqentry in entry code
  irq: add a (temporary) CONFIG_HANDLE_DOMAIN_IRQ_IRQENTRY
  irq: nds32: avoid CONFIG_HANDLE_DOMAIN_IRQ
  irq: arc: avoid CONFIG_HANDLE_DOMAIN_IRQ
  irq: add generic_handle_arch_irq()
  irq: unexport handle_irq_desc()
  irq: simplify handle_domain_{irq,nmi}()
  irq: mips: simplify do_domain_IRQ()
  ...

3 files changed, 2 insertions, 8 deletions

diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index e804026b4797..c2491b295d60 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -13,7 +13,6 @@ config OPENRISC
 	select OF
 	select OF_EARLY_FLATTREE
 	select IRQ_DOMAIN
-	select HANDLE_DOMAIN_IRQ
 	select GPIOLIB
 	select HAVE_ARCH_TRACEHOOK
 	select SPARSE_IRQ
diff --git a/arch/openrisc/kernel/entry.S b/arch/openrisc/kernel/entry.S
index edaa775a648e..59c6d3aa7081 100644
--- a/arch/openrisc/kernel/entry.S
+++ b/arch/openrisc/kernel/entry.S
@@ -569,8 +569,8 @@ EXCEPTION_ENTRY(_external_irq_handler)
 #endif
 	CLEAR_LWA_FLAG(r3)
 	l.addi	r3,r1,0
-	l.movhi	r8,hi(do_IRQ)
-	l.ori	r8,r8,lo(do_IRQ)
+	l.movhi	r8,hi(generic_handle_arch_irq)
+	l.ori	r8,r8,lo(generic_handle_arch_irq)
 	l.jalr r8
 	l.nop
 	l.j    _ret_from_intr
diff --git a/arch/openrisc/kernel/irq.c b/arch/openrisc/kernel/irq.c
index c38fa863afa8..f38e10962a84 100644
--- a/arch/openrisc/kernel/irq.c
+++ b/arch/openrisc/kernel/irq.c
@@ -36,8 +36,3 @@ void __init init_IRQ(void)
 {
 	irqchip_init();
 }
-
-void __irq_entry do_IRQ(struct pt_regs *regs)
-{
-	handle_arch_irq(regs);
-}