[PATCH V2 07/12] vDPA/ifcvf: decouple config/dev IRQ requester and vectors allocator from the adapter

[Zhu Lingshan <lingshan.zhu@intel.com>]

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
---
 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 ee9c22975119..8320bdacace8 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;
-- 
2.31.1