media: ddbridge: request/free_irq using pci_irq_vector, enable MSI-X

Instead of trying to manage IRQ numbers on itself, utilise the
pci_irq_vector() function to do this, which will take care of correct IRQ
numbering for MSI and non-MSI IRQs. While at it, request and enable MSI-X
interrupts for hardware (boards and cards) that support this.

Picked up from the upstream dddvb-0.9.33 release.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

diff --git a/drivers/media/pci/ddbridge/ddbridge-main.c b/drivers/media/pci/ddbridge/ddbridge-main.c
index 7708908..008be90 100644 (file)
--- a/drivers/media/pci/ddbridge/ddbridge-main.c
+++ b/drivers/media/pci/ddbridge/ddbridge-main.c
@@ -77,8 +77,8 @@ static void ddb_irq_exit(struct ddb *dev)
 {
        ddb_irq_disable(dev);
        if (dev->msi == 2)
-               free_irq(dev->pdev->irq + 1, dev);
-       free_irq(dev->pdev->irq, dev);
+               free_irq(pci_irq_vector(dev->pdev, 1), dev);
+       free_irq(pci_irq_vector(dev->pdev, 0), dev);
 }
 
 static void ddb_remove(struct pci_dev *pdev)
@@ -105,7 +105,8 @@ static void ddb_irq_msi(struct ddb *dev, int nr)
        int stat;
 
        if (msi && pci_msi_enabled()) {
-               stat = pci_alloc_irq_vectors(dev->pdev, 1, nr, PCI_IRQ_MSI);
+               stat = pci_alloc_irq_vectors(dev->pdev, 1, nr,
+                                            PCI_IRQ_MSI | PCI_IRQ_MSIX);
                if (stat >= 1) {
                        dev->msi = stat;
                        dev_info(dev->dev, "using %d MSI interrupt(s)\n",
@@ -137,21 +138,24 @@ static int ddb_irq_init(struct ddb *dev)
        if (dev->msi)
                irq_flag = 0;
        if (dev->msi == 2) {
-               stat = request_irq(dev->pdev->irq, ddb_irq_handler0,
-                                  irq_flag, "ddbridge", (void *)dev);
+               stat = request_irq(pci_irq_vector(dev->pdev, 0),
+                                  ddb_irq_handler0, irq_flag, "ddbridge",
+                                  (void *)dev);
                if (stat < 0)
                        return stat;
-               stat = request_irq(dev->pdev->irq + 1, ddb_irq_handler1,
-                                  irq_flag, "ddbridge", (void *)dev);
+               stat = request_irq(pci_irq_vector(dev->pdev, 1),
+                                  ddb_irq_handler1, irq_flag, "ddbridge",
+                                  (void *)dev);
                if (stat < 0) {
-                       free_irq(dev->pdev->irq, dev);
+                       free_irq(pci_irq_vector(dev->pdev, 0), dev);
                        return stat;
                }
        } else
 #endif
        {
-               stat = request_irq(dev->pdev->irq, ddb_irq_handler,
-                                  irq_flag, "ddbridge", (void *)dev);
+               stat = request_irq(pci_irq_vector(dev->pdev, 0),
+                                  ddb_irq_handler, irq_flag, "ddbridge",
+                                  (void *)dev);
                if (stat < 0)
                        return stat;
        }