baseband/fpga_lte_fec: fix crash with debug

When RTE_LIBRTE_BBDEV_DEBUG is enabled, rte_device's driver
pointer is dereferenced twice in fpga_lte_fec's probe callback.
It causes a segmentation fault because this pointer is only
assigned after probe callback call.

This patch makes use of rte_pci_driver pointer instead

Fixes: efd453698c49 ("baseband/fpga_lte_fec: add driver for FEC on FPGA")
Cc: stable@dpdk.org
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Nicolas Chautru <nicolas.chautru@intel.com>

diff --git a/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c b/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
index 71de399..a0fb11c 100644 (file)
--- a/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
+++ b/drivers/baseband/fpga_lte_fec/fpga_lte_fec.c
@@ -2328,7 +2328,7 @@ fpga_lte_fec_init(struct rte_bbdev *dev, struct rte_pci_driver *drv)
 
        rte_bbdev_log_debug(
                        "Init device %s [%s] @ virtaddr %p phyaddr %#"PRIx64,
-                       dev->device->driver->name, dev->data->name,
+                       drv->driver.name, dev->data->name,
                        (void *)pci_dev->mem_resource[0].addr,
                        pci_dev->mem_resource[0].phys_addr);
 }
@@ -2383,7 +2383,7 @@ fpga_lte_fec_probe(struct rte_pci_driver *pci_drv,
                ((uint16_t)(version_id >> 16)), ((uint16_t)version_id));
 
 #ifdef RTE_LIBRTE_BBDEV_DEBUG
-       if (!strcmp(bbdev->device->driver->name,
+       if (!strcmp(pci_drv->driver.name,
                        RTE_STR(FPGA_LTE_FEC_PF_DRIVER_NAME)))
                print_static_reg_debug_info(d->mmio_base);
 #endif