commit 40138c96b2996ad3f8ff6ec72ebe0f7bb7071714
author Daniel Leung <daniel.leung@intel.com> Tue Sep 21 13:37:34 2021 -0700
committer Anas Nashif <anas.nashif@intel.com> Wed Jan 05 15:01:45 2022 -0500
tree 1bd82a642b30351f16ff78da8781dde6ce56f604
parent f38c6b67ed16446c068a1cabe2f2cfbc09d57ebb

interrupt_controller: dw: use finalstatus instead of maskstatus

Instead of using maskstatus to see if an interrupt has fired,
use finalstatus instead. It has been observed that some
controllers do not update maskstatus correctly with incoming
interrupts, but finalstatus works fine.

FYI, the DW driver in Linux is also using finalstatus.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

drivers/interrupt_controller/intc_dw.c

diff --git a/drivers/interrupt_controller/intc_dw.c b/drivers/interrupt_controller/intc_dw.c
index c878521..6fdc86c 100644
--- a/drivers/interrupt_controller/intc_dw.c
+++ b/drivers/interrupt_controller/intc_dw.c
@@ -52,11 +52,11 @@
 	volatile struct dw_ictl_registers * const regs =
 			(struct dw_ictl_registers *)config->base_addr;
 
-	dw_ictl_dispatch_child_isrs(regs->irq_maskstatus_l,
+	dw_ictl_dispatch_child_isrs(regs->irq_finalstatus_l,
 				    config->isr_table_offset);
 
 	if (config->numirqs > 32) {
-		dw_ictl_dispatch_child_isrs(regs->irq_maskstatus_h,
+		dw_ictl_dispatch_child_isrs(regs->irq_finalstatus_h,
 					    config->isr_table_offset + 32);
 	}
 }