[PATCH v2] net: stmmac: dwmac-sun8i: Use reset exclusive

[Corentin Labbe]

The current dwmac_sun8i module cannot be rmmod/modprobe due to that
the reset controller was not released when removed.

This patch remove ambiguity, by using of_reset_control_get_exclusive and
add the missing reset_control_put().

Note that we cannot use devm_reset_control_get, since the reset is not
in the device node.

Signed-off-by: Corentin Labbe <clabbe.montj...@gmail.com>
---
Changes since v1:
- added a note about devm_reset_control_get in commit message

 drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c 
b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 57bb6dd7b401..1736d7cb0d96 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -854,6 +854,7 @@ static int sun8i_dwmac_unpower_internal_phy(struct 
sunxi_priv_data *gmac)
 
        clk_disable_unprepare(gmac->ephy_clk);
        reset_control_assert(gmac->rst_ephy);
+       reset_control_put(gmac->rst_ephy);
        return 0;
 }
 
@@ -1010,7 +1011,7 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
                        return -EINVAL;
                }
 
-               gmac->rst_ephy = of_reset_control_get(plat_dat->phy_node, NULL);
+               gmac->rst_ephy = 
of_reset_control_get_exclusive(plat_dat->phy_node, NULL);
                if (IS_ERR(gmac->rst_ephy)) {
                        ret = PTR_ERR(gmac->rst_ephy);
                        if (ret == -EPROBE_DEFER)
-- 
2.13.5