From 4aba278b4dd79e1ccda39ffe7efc49806f395d39 Mon Sep 17 00:00:00 2001
From: Radha Krishna Simha Jiguru <rjiguru@codeaurora.org>
Date: Thu, 28 May 2020 21:01:29 +0530
Subject: [PATCH] qcacmn: Set IRQ_DISABLE_UNLAZY flag for DP interrupts on
 QCN9000

Since DP interrupts are not disabled at source, and enabled and
disabled only at GIC level, set IRQ_DISABLE_UNLAZY flag to avoid
spurious interrupt detection and avoid interrupt affinity failures.

Change-Id: Ie98d8cba6f93bccd4d508a28bebc216d2b74fe1f
---
 hif/src/hif_main.h    |  2 ++
 hif/src/pcie/if_pci.c | 11 ++++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/hif/src/hif_main.h b/hif/src/hif_main.h
index c582df212bc6..bd6afae57f0f 100644
--- a/hif/src/hif_main.h
+++ b/hif/src/hif_main.h
@@ -250,6 +250,8 @@ struct hif_softc {
 	/* The CPU hotplug event registration handle */
 	struct qdf_cpuhp_handler *cpuhp_event_handle;
 #endif
+	uint32_t irq_unlazy_disable;
+	/* Should the unlzay support for interrupt delivery be disabled */
 };
 
 static inline
diff --git a/hif/src/pcie/if_pci.c b/hif/src/pcie/if_pci.c
index 5745ccd06c6b..4fa06fccfdab 100644
--- a/hif/src/pcie/if_pci.c
+++ b/hif/src/pcie/if_pci.c
@@ -2586,6 +2586,8 @@ static void hif_pci_deconfigure_grp_irq(struct hif_softc *scn)
 			hif_ext_group->irq_requested = false;
 			for (j = 0; j < hif_ext_group->numirq; j++) {
 				irq = hif_ext_group->os_irq[j];
+				if (scn->irq_unlazy_disable)
+					irq_clear_status_flags(irq, IRQ_DISABLE_UNLAZY);
 				pfrm_free_irq(scn->qdf_dev->dev,
 					      irq, hif_ext_group);
 			}
@@ -3785,7 +3787,8 @@ int hif_pci_configure_grp_irq(struct hif_softc *scn,
 	pci_slot = hif_get_pci_slot(scn);
 	for (j = 0; j < hif_ext_group->numirq; j++) {
 		irq = hif_ext_group->irq[j];
-
+		if (scn->irq_unlazy_disable)
+			irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY);
 		hif_info("request_irq = %d for grp %d",
 			 irq, hif_ext_group->grp_id);
 		ret = pfrm_request_irq(
@@ -4100,6 +4103,12 @@ again:
 
 	tgt_info->target_type = target_type;
 
+	/*
+	 * Disable unlzay interrupt registration for QCN9000
+	 */
+	if (target_type == TARGET_TYPE_QCN9000)
+		ol_sc->irq_unlazy_disable = 1;
+
 	if (ce_srng_based(ol_sc)) {
 		HIF_TRACE("%s:Skip tgt_wake up for srng devices\n", __func__);
 	} else {