From: Zhu Lingshan <lingshan.zhu@intel.com>
Date: Fri, 25 Nov 2022 22:57:19 +0800
Subject: [PATCH] vDPA/ifcvf: decouple config/dev IRQ requester and vectors
 allocator from the adapter
References: bsc#1012628
Patch-mainline: 6.2.5
Git-commit: a70d833e696e538a0feff5e539086c74a90ddf90

commit a70d833e696e538a0feff5e539086c74a90ddf90 upstream.

This commit decouples the config irq requester, the device
shared irq requester and the MSI vectors allocator from
the adapter. So they can be safely invoked since probe
before the adapter is allocated.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Cc: stable@vger.kernel.org
Message-Id: <20221125145724.1129962-8-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/vdpa/ifcvf/ifcvf_main.c | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
index 8573804e..6fcc412b 100644
--- a/drivers/vdpa/ifcvf/ifcvf_main.c
+++ b/drivers/vdpa/ifcvf/ifcvf_main.c
@@ -132,10 +132,9 @@ static void ifcvf_free_irq(struct ifcvf_hw *vf)
  * It returns the number of allocated vectors, negative
  * return value when fails.
  */
-static int ifcvf_alloc_vectors(struct ifcvf_adapter *adapter)
+static int ifcvf_alloc_vectors(struct ifcvf_hw *vf)
 {
-	struct pci_dev *pdev = adapter->pdev;
-	struct ifcvf_hw *vf = &adapter->vf;
+	struct pci_dev *pdev = vf->pdev;
 	int max_intr, ret;
 
 	/* all queues and config interrupt  */
@@ -222,10 +221,9 @@ static int ifcvf_request_vqs_reused_irq(struct ifcvf_hw *vf)
 	return -EFAULT;
 }
 
-static int ifcvf_request_dev_irq(struct ifcvf_adapter *adapter)
+static int ifcvf_request_dev_irq(struct ifcvf_hw *vf)
 {
-	struct pci_dev *pdev = adapter->pdev;
-	struct ifcvf_hw *vf = &adapter->vf;
+	struct pci_dev *pdev = vf->pdev;
 	int i, vector, ret, irq;
 
 	vector = 0;
@@ -276,10 +274,9 @@ static int ifcvf_request_vq_irq(struct ifcvf_hw *vf)
 	return ret;
 }
 
-static int ifcvf_request_config_irq(struct ifcvf_adapter *adapter)
+static int ifcvf_request_config_irq(struct ifcvf_hw *vf)
 {
-	struct pci_dev *pdev = adapter->pdev;
-	struct ifcvf_hw *vf = &adapter->vf;
+	struct pci_dev *pdev = vf->pdev;
 	int config_vector, ret;
 
 	if (vf->msix_vector_status == MSIX_VECTOR_PER_VQ_AND_CONFIG)
@@ -322,7 +319,7 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter)
 	struct ifcvf_hw *vf = &adapter->vf;
 	int nvectors, ret, max_intr;
 
-	nvectors = ifcvf_alloc_vectors(adapter);
+	nvectors = ifcvf_alloc_vectors(vf);
 	if (nvectors <= 0)
 		return -EFAULT;
 
@@ -333,7 +330,7 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter)
 
 	if (nvectors == 1) {
 		vf->msix_vector_status = MSIX_VECTOR_DEV_SHARED;
-		ret = ifcvf_request_dev_irq(adapter);
+		ret = ifcvf_request_dev_irq(vf);
 
 		return ret;
 	}
@@ -342,7 +339,7 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter)
 	if (ret)
 		return ret;
 
-	ret = ifcvf_request_config_irq(adapter);
+	ret = ifcvf_request_config_irq(vf);
 
 	if (ret)
 		return ret;
-- 
2.35.3