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net/macb: make clk_enable atomic

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Use clk_prepare_enable/clk_disable_unprepare to be safe on SMP systems.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Fabio Estevam <festevam@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steffen Trumtrar 2013-03-27 23:07:07 +00:00 committed by David S. Miller
parent a1ae385df2
commit ace58010c4
1 changed files with 10 additions and 10 deletions
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20
drivers/net/ethernet/cadence/macb.c
View file

@ -1561,14 +1561,14 @@ static int __init macb_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to get macb_clk\n");
goto err_out_free_dev;
}
clk_enable(bp->pclk);
clk_prepare_enable(bp->pclk);
bp->hclk = clk_get(&pdev->dev, "hclk");
if (IS_ERR(bp->hclk)) {
dev_err(&pdev->dev, "failed to get hclk\n");
goto err_out_put_pclk;
}
clk_enable(bp->hclk);
clk_prepare_enable(bp->hclk);
bp->regs = ioremap(regs->start, resource_size(regs));
if (!bp->regs) {
@ -1658,9 +1658,9 @@ static int __init macb_probe(struct platform_device *pdev)
err_out_iounmap:
iounmap(bp->regs);
err_out_disable_clocks:
clk_disable(bp->hclk);
clk_disable_unprepare(bp->hclk);
clk_put(bp->hclk);
clk_disable(bp->pclk);
clk_disable_unprepare(bp->pclk);
err_out_put_pclk:
clk_put(bp->pclk);
err_out_free_dev:
@ -1687,9 +1687,9 @@ static int __exit macb_remove(struct platform_device *pdev)
unregister_netdev(dev);
free_irq(dev->irq, dev);
iounmap(bp->regs);
clk_disable(bp->hclk);
clk_disable_unprepare(bp->hclk);
clk_put(bp->hclk);
clk_disable(bp->pclk);
clk_disable_unprepare(bp->pclk);
clk_put(bp->pclk);
free_netdev(dev);
platform_set_drvdata(pdev, NULL);
@ -1707,8 +1707,8 @@ static int macb_suspend(struct platform_device *pdev, pm_message_t state)
netif_carrier_off(netdev);
netif_device_detach(netdev);
clk_disable(bp->hclk);
clk_disable(bp->pclk);
clk_disable_unprepare(bp->hclk);
clk_disable_unprepare(bp->pclk);
return 0;
}
@ -1718,8 +1718,8 @@ static int macb_resume(struct platform_device *pdev)
struct net_device *netdev = platform_get_drvdata(pdev);
struct macb *bp = netdev_priv(netdev);
clk_enable(bp->pclk);
clk_enable(bp->hclk);
clk_prepare_enable(bp->pclk);
clk_prepare_enable(bp->hclk);
netif_device_attach(netdev);