From: Anirudh Rayabharam mail@anirudhrb.com

In case clk_prepare() fails, capture and propagate the error code up the stack. If regulator_enable() was called earlier, properly unwind it by calling regulator_disable().

Signed-off-by: Anirudh Rayabharam mail@anirudhrb.com Cc: David S. Miller davem@davemloft.net Cc: stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c index fc68e90acbea..fc3b0acc8f99 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c @@ -30,7 +30,7 @@ struct sunxi_priv_data { static int sun7i_gmac_init(struct platform_device *pdev, void *priv) { struct sunxi_priv_data *gmac = priv; - int ret; + int ret = 0;

if (gmac->regulator) { ret = regulator_enable(gmac->regulator); @@ -50,10 +50,12 @@ 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); - clk_prepare(gmac->tx_clk); + ret = clk_prepare(gmac->tx_clk); + if (ret && gmac->regulator) + regulator_disable(gmac->regulator); }

- return 0; + return ret; }

static void sun7i_gmac_exit(struct platform_device *pdev, void *priv)