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-rw-r--r--target/linux/ar71xx/patches-4.14/955-qca953x-fix-potential-missing-irq-dispatch.patch27
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-4.14/955-qca953x-fix-potential-missing-irq-dispatch.patch b/target/linux/ar71xx/patches-4.14/955-qca953x-fix-potential-missing-irq-dispatch.patch
new file mode 100644
index 0000000000..5174029989
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.14/955-qca953x-fix-potential-missing-irq-dispatch.patch
@@ -0,0 +1,27 @@
+--- a/arch/mips/ath79/irq.c
++++ b/arch/mips/ath79/irq.c
+@@ -69,15 +69,21 @@ static void qca953x_ip2_irq_dispatch(str
+ u32 status;
+
+ status = ath79_reset_rr(QCA953X_RESET_REG_PCIE_WMAC_INT_STATUS);
++ status &= QCA953X_PCIE_WMAC_INT_PCIE_ALL | QCA953X_PCIE_WMAC_INT_WMAC_ALL;
++
++ if (status == 0) {
++ spurious_interrupt();
++ return;
++ }
+
+ if (status & QCA953X_PCIE_WMAC_INT_PCIE_ALL) {
+ ath79_ddr_wb_flush(3);
+ generic_handle_irq(ATH79_IP2_IRQ(0));
+- } else if (status & QCA953X_PCIE_WMAC_INT_WMAC_ALL) {
++ }
++
++ if (status & QCA953X_PCIE_WMAC_INT_WMAC_ALL) {
+ ath79_ddr_wb_flush(4);
+ generic_handle_irq(ATH79_IP2_IRQ(1));
+- } else {
+- spurious_interrupt();
+ }
+ }
+