igb_uio: fix build with kernel <= 3.17

Compile fails when kernel version is <= 3.17 with error:
"dereferencing pointer to incomplete type". This is because struct
uio_device definition is not exposed in kernel earlier than 3.17.

This patch fixes it by using pointer of rte_uio_pci_dev as
dev_id instead of uio_device for irq device handler.

Fixes: 5f6ff30dc507 ("igb_uio: fix interrupt enablement after FLR in VM")
Cc: stable@dpdk.org
Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Reviewed-by: Jianfeng Tan <jianfeng.tan@intel.com>

diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index 3884448..f7ef825 100644 (file)
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -209,9 +209,8 @@ igbuio_pci_irqcontrol(struct uio_info *info, s32 irq_state)
 static irqreturn_t
 igbuio_pci_irqhandler(int irq, void *dev_id)
 {
-       struct uio_device *idev = (struct uio_device *)dev_id;
-       struct uio_info *info = idev->info;
-       struct rte_uio_pci_dev *udev = info->priv;
+       struct rte_uio_pci_dev *udev = (struct rte_uio_pci_dev *)dev_id;
+       struct uio_info *info = &udev->info;
 
        /* Legacy mode need to mask in hardware */
        if (udev->mode == RTE_INTR_MODE_LEGACY &&
@@ -299,7 +298,7 @@ igbuio_pci_enable_interrupts(struct rte_uio_pci_dev *udev)
        if (udev->info.irq != UIO_IRQ_NONE)
                err = request_irq(udev->info.irq, igbuio_pci_irqhandler,
                                  udev->info.irq_flags, udev->info.name,
-                                 udev->info.uio_dev);
+                                 udev);
        dev_info(&udev->pdev->dev, "uio device registered with irq %lx\n",
                 udev->info.irq);
 
@@ -310,7 +309,7 @@ static void
 igbuio_pci_disable_interrupts(struct rte_uio_pci_dev *udev)
 {
        if (udev->info.irq) {
-               free_irq(udev->info.irq, udev->info.uio_dev);
+               free_irq(udev->info.irq, udev);
                udev->info.irq = 0;
        }