[dpdk-dev] [PATCH] igb_uio: fix uevent montior issue

[Jeff Guo <jia.guo@intel.com>]

udev could not detect remove and add event of device when hotplug in
and out devices, that related with the fix about using pointer of
rte_uio_pci_dev as dev_id instead of uio_device for irq device handler,
that would result igb uio irq failure when kernel version after than 3.17.
so this patch correct it by use kernel version check before handle the
pci interrupt.

Fixes: 6b9ed026a870 ("igb_uio: fix build with kernel <= 3.17")
Signed-off-by: Jeff Guo <jia.guo@intel.com>
---
 lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index 9f0fb5e..14ce2ea 100644
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -192,9 +192,14 @@ igbuio_pci_irqcontrol(struct uio_info *info, s32 irq_state)
 static irqreturn_t
 igbuio_pci_irqhandler(int irq, void *dev_id)
 {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
 	struct rte_uio_pci_dev *udev = (struct rte_uio_pci_dev *)dev_id;
 	struct uio_info *info = &udev->info;
-
+#else
+	struct uio_device *idev = (struct uio_device *)dev_id;
+	struct uio_info *info = idev->info;
+	struct rte_uio_pci_dev *udev = info->priv;
+#endif
 	/* Legacy mode need to mask in hardware */
 	if (udev->mode == RTE_INTR_MODE_LEGACY &&
 	    !pci_check_and_mask_intx(udev->pdev))
@@ -279,9 +284,15 @@ igbuio_pci_enable_interrupts(struct rte_uio_pci_dev *udev)
 	}
 
 	if (udev->info.irq != UIO_IRQ_NONE)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
 		err = request_irq(udev->info.irq, igbuio_pci_irqhandler,
 				  udev->info.irq_flags, udev->info.name,
 				  udev);
+#else
+		err = request_irq(udev->info.irq, igbuio_pci_irqhandler,
+				  udev->info.irq_flags, udev->info.name,
+				  udev->info.uio_dev);
+#endif
 	dev_info(&udev->pdev->dev, "uio device registered with irq %lx\n",
 		 udev->info.irq);
 
@@ -292,7 +303,11 @@ static void
 igbuio_pci_disable_interrupts(struct rte_uio_pci_dev *udev)
 {
 	if (udev->info.irq) {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
 		free_irq(udev->info.irq, udev);
+#else
+		free_irq(udev->info.irq, udev->info.uio_dev);
+#endif
 		udev->info.irq = 0;
 	}
 
-- 
2.7.4