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

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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>
This commit is contained in:
Guo Ren 2019-06-06 15:37:33 +08:00 committed by Marc Zyngier
parent dc96f45074
commit e85c9c90b4
1 changed files with 2 additions and 6 deletions
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8
drivers/irqchip/irq-csky-mpintc.c
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@ -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)