diff options
| author | Branislav Radocaj <branislav@radocaj.org> | 2017-12-12 00:13:38 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-13 13:57:06 -0500 |
| commit | 2a9ee696c72a24d63529c76483fcd92d04b1d2b7 (patch) | |
| tree | ca8c58b979b0915b10533843f907f651027eafd4 | |
| parent | aceef61ee56898cfa7b6960fb60b9326c3860441 (diff) | |
| download | linux-2a9ee696c72a24d63529c76483fcd92d04b1d2b7.tar.bz2 | |
net: ethernet: arc: fix error handling in emac_rockchip_probe
If clk_set_rate() fails, we should disable clk before return.
Found by Linux Driver Verification project (linuxtesting.org).
Changes since v2 [1]:
* Merged with latest code changes
Changes since v1:
Update made thanks to David's review, much appreciated David.
* Improved inconsistent failure handling of clock rate setting
* For completeness of usecase, added arc_emac_probe error handling
Signed-off-by: Branislav Radocaj <branislav@radocaj.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/arc/emac_rockchip.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/ethernet/arc/emac_rockchip.c b/drivers/net/ethernet/arc/emac_rockchip.c index c6163874e4e7..16f9bee992fe 100644 --- a/drivers/net/ethernet/arc/emac_rockchip.c +++ b/drivers/net/ethernet/arc/emac_rockchip.c @@ -199,9 +199,11 @@ static int emac_rockchip_probe(struct platform_device *pdev) /* RMII interface needs always a rate of 50MHz */ err = clk_set_rate(priv->refclk, 50000000); - if (err) + if (err) { dev_err(dev, "failed to change reference clock rate (%d)\n", err); + goto out_regulator_disable; + } if (priv->soc_data->need_div_macclk) { priv->macclk = devm_clk_get(dev, "macclk"); @@ -230,12 +232,14 @@ static int emac_rockchip_probe(struct platform_device *pdev) err = arc_emac_probe(ndev, interface); if (err) { dev_err(dev, "failed to probe arc emac (%d)\n", err); - goto out_regulator_disable; + goto out_clk_disable_macclk; } return 0; + out_clk_disable_macclk: - clk_disable_unprepare(priv->macclk); + if (priv->soc_data->need_div_macclk) + clk_disable_unprepare(priv->macclk); out_regulator_disable: if (priv->regulator) regulator_disable(priv->regulator); |