fpga: dfl: pci: fix return value of cci_pci_sriov_configure

pci_driver.sriov_configure should return negative value on error and
number of enabled VFs on success. But now the driver returns 0 on
success. The sriov configure still works but will cause a warning
message:

  XX VFs requested; only 0 enabled

This patch changes the return value accordingly.

Cc: stable@vger.kernel.org
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Signed-off-by: Moritz Fischer <mdf@kernel.org>

diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c
index 89ca292..5387550 100644 (file)
--- a/drivers/fpga/dfl-pci.c
+++ b/drivers/fpga/dfl-pci.c
@@ -248,11 +248,13 @@ static int cci_pci_sriov_configure(struct pci_dev *pcidev, int num_vfs)
                        return ret;
 
                ret = pci_enable_sriov(pcidev, num_vfs);
-               if (ret)
+               if (ret) {
                        dfl_fpga_cdev_config_ports_pf(cdev);
+                       return ret;
+               }
        }
 
-       return ret;
+       return num_vfs;
 }
 
 static void cci_pci_remove(struct pci_dev *pcidev)