From d59ba0296e886adb38ede9505ea7508e62df304d Mon Sep 17 00:00:00 2001 From: Darek Stojaczyk Date: Wed, 24 Oct 2018 12:11:31 +0200 Subject: [PATCH] vfio: fix interrupt unregister for hotplug notifier This function is documented to return the number of unregistered callbacks or negative numbers on error, but pci_vfio checks for ret != 0 to detect failures. Not anymore. Fixes: c115fd000c32 ("vfio: handle hotplug request notifier") Signed-off-by: Darek Stojaczyk Acked-by: Anatoly Burakov --- drivers/bus/pci/linux/pci_vfio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/bus/pci/linux/pci_vfio.c b/drivers/bus/pci/linux/pci_vfio.c index b1f0683fed..305cc0601d 100644 --- a/drivers/bus/pci/linux/pci_vfio.c +++ b/drivers/bus/pci/linux/pci_vfio.c @@ -341,7 +341,7 @@ pci_vfio_enable_notifier(struct rte_pci_device *dev, int vfio_dev_fd) ret = rte_intr_callback_unregister(&dev->vfio_req_intr_handle, pci_vfio_req_handler, (void *)&dev->device); - if (ret) + if (ret < 0) RTE_LOG(ERR, EAL, "Fail to unregister req notifier handler.\n"); goto error; @@ -373,7 +373,7 @@ pci_vfio_disable_notifier(struct rte_pci_device *dev) ret = rte_intr_callback_unregister(&dev->vfio_req_intr_handle, pci_vfio_req_handler, (void *)&dev->device); - if (ret) { + if (ret < 0) { RTE_LOG(ERR, EAL, "fail to unregister req notifier handler.\n"); return -1; -- 2.20.1