On 2/9/2018 6:01 AM, Thomas Monjalon wrote:
30/01/2018 11:01, Jeff Guo:
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....@intel.com>
        struct rte_uio_pci_dev *udev = (struct rte_uio_pci_dev *)dev_id;
        struct uio_info *info = &udev->info;
+       struct uio_device *idev = (struct uio_device *)dev_id;
+       struct uio_info *info = idev->info;
+       struct rte_uio_pci_dev *udev = info->priv;
Can we avoid checking Linux version number?
This method won't work with kernel backports.
i don't think that is a bug rather than a kernel feature parameter change , so i am not sure if it will definitely a chance exist for the kernel backport fix for that.

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