diff options
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/spi/mcp251x.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c index 6e5831308c70..b5d70826a186 100644 --- a/drivers/net/can/spi/mcp251x.c +++ b/drivers/net/can/spi/mcp251x.c @@ -994,15 +994,13 @@ static int mcp251x_can_probe(struct spi_device *spi) struct clk *clk; int freq, ret; - clk = devm_clk_get(&spi->dev, NULL); - if (IS_ERR(clk)) { - if (pdata) - freq = pdata->oscillator_frequency; - else - return PTR_ERR(clk); - } else { - freq = clk_get_rate(clk); - } + clk = devm_clk_get_optional(&spi->dev, NULL); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + freq = clk_get_rate(clk); + if (freq == 0 && pdata) + freq = pdata->oscillator_frequency; /* Sanity check */ if (freq < 1000000 || freq > 25000000) @@ -1013,11 +1011,9 @@ static int mcp251x_can_probe(struct spi_device *spi) if (!net) return -ENOMEM; - if (!IS_ERR(clk)) { - ret = clk_prepare_enable(clk); - if (ret) - goto out_free; - } + ret = clk_prepare_enable(clk); + if (ret) + goto out_free; net->netdev_ops = &mcp251x_netdev_ops; net->flags |= IFF_ECHO; @@ -1102,8 +1098,7 @@ error_probe: mcp251x_power_enable(priv->power, 0); out_clk: - if (!IS_ERR(clk)) - clk_disable_unprepare(clk); + clk_disable_unprepare(clk); out_free: free_candev(net); @@ -1121,8 +1116,7 @@ static int mcp251x_can_remove(struct spi_device *spi) mcp251x_power_enable(priv->power, 0); - if (!IS_ERR(priv->clk)) - clk_disable_unprepare(priv->clk); + clk_disable_unprepare(priv->clk); free_candev(net); |