irqchip/irq-csky-mpintc: Remove unnecessary loop in interrupt handler

csky_mpintc_handler()
  ->handle_domain_irq()
    ->irq_exit()
      ->invoke_softirq()
        ->__do_softirq()
          ->local_irq_enable()

If new interrupt coming, it'll get into interrupt trap before return to
csky_mpintc_handler(). So there is no need loop in csky_mpintc_handler.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/irqchip/irq-csky-mpintc.c b/drivers/irqchip/irq-csky-mpintc.c
index 4457722cdd18..806ba0ef33c0 100644
--- a/drivers/irqchip/irq-csky-mpintc.c
+++ b/drivers/irqchip/irq-csky-mpintc.c
@@ -34,7 +34,6 @@ static void __iomem *INTCL_base;
 #define INTCL_PICTLR    0x0
 #define INTCL_CFGR      0x14
 #define INTCL_SIGR      0x60
-#define INTCL_HPPIR     0x68
 #define INTCL_RDYIR     0x6c
 #define INTCL_SENR      0xa0
 #define INTCL_CENR      0xa4
@@ -75,11 +74,8 @@ static void csky_mpintc_handler(struct pt_regs *regs)
 {
         void __iomem *reg_base = this_cpu_read(intcl_reg);
 
-        do {
-                handle_domain_irq(root_domain,
-                                  readl_relaxed(reg_base + INTCL_RDYIR),
-                                  regs);
-        } while (readl_relaxed(reg_base + INTCL_HPPIR) & BIT(31));
+        handle_domain_irq(root_domain,
+                readl_relaxed(reg_base + INTCL_RDYIR), regs);
 }
 
 static void csky_mpintc_enable(struct irq_data *d)