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For example, the call of 'rte_pci_find_ext_capability()' will fail in the secondary process. Fix this problem by getting and saving the value of 'fd' also in the secondary process logic. Fixes: 9b957f378abf ("pci: merge uio functions for linux and bsd") Cc: mukawa@igel.co.jp Cc: stable@dpdk.org Signed-off-by: Zerun Fu Reviewed-by: Chaoyong He Reviewed-by: Long Wu Reviewed-by: Peng Zhang --- drivers/bus/pci/linux/pci_uio.c | 5 ++++- drivers/bus/pci/pci_common_uio.c | 8 ++++---- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/bus/pci/linux/pci_uio.c b/drivers/bus/pci/linux/pci_uio.c index 97d740dfe5..6680e42efb 100644 --- a/drivers/bus/pci/linux/pci_uio.c +++ b/drivers/bus/pci/linux/pci_uio.c @@ -237,7 +237,7 @@ pci_uio_alloc_resource(struct rte_pci_device *dev, } snprintf(devname, sizeof(devname), "/dev/uio%u", uio_num); - /* save fd if in primary process */ + /* save fd */ fd = open(devname, O_RDWR); if (fd < 0) { RTE_LOG(ERR, EAL, "Cannot open %s: %s\n", @@ -261,6 +261,9 @@ pci_uio_alloc_resource(struct rte_pci_device *dev, if (rte_intr_dev_fd_set(dev->intr_handle, uio_cfg_fd)) goto error; + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return 0; + if (dev->kdrv == RTE_PCI_KDRV_IGB_UIO) { if (rte_intr_type_set(dev->intr_handle, RTE_INTR_HANDLE_UIO)) goto error; diff --git a/drivers/bus/pci/pci_common_uio.c b/drivers/bus/pci/pci_common_uio.c index fcd8a49daf..b6f79b067d 100644 --- a/drivers/bus/pci/pci_common_uio.c +++ b/drivers/bus/pci/pci_common_uio.c @@ -122,15 +122,15 @@ pci_uio_map_resource(struct rte_pci_device *dev) if (rte_intr_dev_fd_set(dev->intr_handle, -1)) return -1; - /* secondary processes - use already recorded details */ - if (rte_eal_process_type() != RTE_PROC_PRIMARY) - return pci_uio_map_secondary(dev); - /* allocate uio resource */ ret = pci_uio_alloc_resource(dev, &uio_res); if (ret) return ret; + /* secondary processes - use already recorded details */ + if (rte_eal_process_type() != RTE_PROC_PRIMARY) + return pci_uio_map_secondary(dev); + /* Map all BARs */ for (i = 0; i != PCI_MAX_RESOURCE; i++) { /* skip empty BAR */ -- 2.39.1