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

BugLink: https://bugs.launchpad.net/bugs/1931896
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>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
index 0e1ca2cba3c7c5220d8c24b62e835f64e5bdc2a2..0e86553fc06fdb93ab3379bc17be13ee51bff008 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;