Revert "net: stmicro: fix a missing check of clk_prepare"

commit bee1b0511844c8c79fccf1f2b13472393b6b91f7 upstream.

This reverts commit f86a3b83833e7cfe558ca4d70b64ebc48903efec.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The original commit causes a memory leak when it is trying to claim it
is properly handling errors.  Revert this change and fix it up properly
in a follow-on commit.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: David S. Miller <davem@davemloft.net>
Fixes: f86a3b83833e ("net: stmicro: fix a missing check of clk_prepare")
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-21-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
index 65a3e3b5facef399987672a18ff8492ffb2ceaca..91f45c2b32e996b9d9ee063e66cea7cbc5db20c6 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
@@ -50,9 +50,7 @@ static int sun7i_gmac_init(struct platform_device *pdev, void *priv)
                gmac->clk_enabled = 1;
        } else {
                clk_set_rate(gmac->tx_clk, SUN7I_GMAC_MII_RATE);
-               ret = clk_prepare(gmac->tx_clk);
-               if (ret)
-                       return ret;
+               clk_prepare(gmac->tx_clk);
        }
 
        return 0;