dpdk/dpdk-16.04_patches/0007-Fix-a-crash-in-igb_uio-driver-when-the-device-is-rem.patch

From a1020e16640e3b5d8cf32ef7d2914b788a1e06f6 Mon Sep 17 00:00:00 2001
From: Bud Grise <griseb@cisco.com>
Date: Tue, 2 Feb 2016 12:45:44 -0800
Subject: [PATCH 7/8] Fix a crash in igb_uio driver when the device is removed.

This crash happens because the device still has MSI configured,
the fix is to free the IRQ.

Signed-off-by: Todd Foggoa (tfoggoa) <tfoggoa@cisco.com>
---
 lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index 72b2692..bf12391 100644
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -506,8 +506,15 @@ static void
 igbuio_pci_remove(struct pci_dev *dev)
 {
 	struct rte_uio_pci_dev *udev = pci_get_drvdata(dev);
+	struct uio_info *info = pci_get_drvdata(dev);
 
 	sysfs_remove_group(&dev->dev.kobj, &dev_attr_grp);
+
+	if (info->irq && (info->irq != UIO_IRQ_CUSTOM)){
+		free_irq(info->irq, info->uio_dev);
+		info->irq = UIO_IRQ_NONE;
+	}
+
 	uio_unregister_device(&udev->info);
 	igbuio_pci_release_iomem(&udev->info);
 	if (udev->mode == RTE_INTR_MODE_MSIX)
-- 
2.5.4 (Apple Git-61)