net: qca_spi: Fix possible race during probe

Registering the netdev before setting the priv data is unsafe.
So fix this possible race by setting the priv data first.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: <stable@vger.kernel.org> # v3.18+
Fixes: 291ab06e (net: qualcomm: new Ethernet over SPI driver for QCA7000)
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qualcomm/qca_spi.c b/drivers/net/ethernet/qualcomm/qca_spi.c
index f66641d..6af028d 100644 (file)
--- a/drivers/net/ethernet/qualcomm/qca_spi.c
+++ b/drivers/net/ethernet/qualcomm/qca_spi.c
@@ -912,6 +912,8 @@ qca_spi_probe(struct spi_device *spi_device)
        qca->spi_dev = spi_device;
        qca->legacy_mode = legacy_mode;
 
+       spi_set_drvdata(spi_device, qcaspi_devs);
+
        mac = of_get_mac_address(spi_device->dev.of_node);
 
        if (mac)
@@ -944,8 +946,6 @@ qca_spi_probe(struct spi_device *spi_device)
                return -EFAULT;
        }
 
-       spi_set_drvdata(spi_device, qcaspi_devs);
-
        qcaspi_init_device_debugfs(qca);
 
        return 0;