stmmac: devm_reset_control_get can return PROBE_DEFER

In socfpga_dwmac_parse_data forward error code from devm_reset_control_get.
This gives the driver another chance to laod if altr,rst-mgr is loaded after
the network driver.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index e97074c..1cacea9 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -91,7 +91,7 @@ static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *
                                                  STMMAC_RESOURCE_NAME);
        if (IS_ERR(dwmac->stmmac_rst)) {
                dev_info(dev, "Could not get reset control!\n");
-               return -EINVAL;
+               return PTR_ERR(dwmac->stmmac_rst);
        }
 
        dwmac->interface = of_get_phy_mode(np);