DPDK patch: Fix a crash in igb_uio driver when the device is removed.

Change-Id: I101166ebda1c06e20a3c89cd38786ce44b7ab5d5
Signed-off-by: Todd Foggoa <[email protected]>

diff --git a/dpdk/dpdk-2.2.0_patches/0006-Fix-a-crash-in-igb_uio-driver-when-the-device-is-rem.patch b/dpdk/dpdk-2.2.0_patches/0006-Fix-a-crash-in-igb_uio-driver-when-the-device-is-rem.patch
new file mode 100644 (file)
index 0000000..f15e4aa
--- /dev/null
+++ b/dpdk/dpdk-2.2.0_patches/0006-Fix-a-crash-in-igb_uio-driver-when-the-device-is-rem.patch
@@ -0,0 +1,33 @@
+From 68d23609ec0c42773043383ff2939a30830e8069 Mon Sep 17 00:00:00 2001
+From: Bud Grise <[email protected]>
+Date: Tue, 2 Feb 2016 12:45:44 -0800
+Subject: [PATCH 6/8] 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) <[email protected]>
+---
+ lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+index f5617d2..23a5cfa 100644
+--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
++++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+@@ -571,6 +571,12 @@ igbuio_pci_remove(struct pci_dev *dev)
+       udev = info->priv;
+ 
+       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(info);
+       igbuio_pci_release_iomem(info);
+       if (udev->mode == RTE_INTR_MODE_MSIX)
+-- 
+2.2.1
+