target/linux/ar71xx/patches-4.14/955-qca953x-fix-potential-missing-irq-dispatch.patch

   1 --- a/arch/mips/ath79/irq.c
   2 +++ b/arch/mips/ath79/irq.c
   3 @@ -69,15 +69,21 @@ static void qca953x_ip2_irq_dispatch(str
   4         u32 status;
   5
   6         status = ath79_reset_rr(QCA953X_RESET_REG_PCIE_WMAC_INT_STATUS);
   7 +       status &= QCA953X_PCIE_WMAC_INT_PCIE_ALL | QCA953X_PCIE_WMAC_INT_WMAC_ALL;
   8 +
   9 +       if (status == 0) {
  10 +               spurious_interrupt();
  11 +               return;
  12 +       }
  13
  14         if (status & QCA953X_PCIE_WMAC_INT_PCIE_ALL) {
  15                 ath79_ddr_wb_flush(3);
  16                 generic_handle_irq(ATH79_IP2_IRQ(0));
  17 -       } else if (status & QCA953X_PCIE_WMAC_INT_WMAC_ALL) {
  18 +       }
  19 +
  20 +       if (status & QCA953X_PCIE_WMAC_INT_WMAC_ALL) {
  21                 ath79_ddr_wb_flush(4);
  22                 generic_handle_irq(ATH79_IP2_IRQ(1));
  23 -       } else {
  24 -               spurious_interrupt();
  25         }
  26  }
  27