macb: Basic suspend/resume support (c1f598fd) · Commits · 戴 / test

This implements suspend and resume callbacks for the macb driver. We may have to do some more to gracefully shut the MAC down, but this at least prevents the macb from waking the system when hooked up to a busy network. Signed-off-by:

Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Patrice Vilchez <patrice.vilchez@rfo.atmel.com> Cc: Nicolas FERRE <nicolas.ferre@rfo.atmel.com>

drivers/net/macb.c

+37 −0

Original line number	Diff line number	Diff line
		@@ -1277,8 +1277,45 @@ static int __exit macb_remove(struct platform_device *pdev)
		return 0;
		}

		#ifdef CONFIG_PM
		static int macb_suspend(struct platform_device *pdev, pm_message_t state)
		{
		struct net_device *netdev = platform_get_drvdata(pdev);
		struct macb *bp = netdev_priv(netdev);

		netif_device_detach(netdev);

		#ifndef CONFIG_ARCH_AT91
		clk_disable(bp->hclk);
		#endif
		clk_disable(bp->pclk);

		return 0;
		}

		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);
		#ifndef CONFIG_ARCH_AT91
		clk_enable(bp->hclk);
		#endif

		netif_device_attach(netdev);

		return 0;
		}
		#else
		#define macb_suspend NULL
		#define macb_resume NULL
		#endif

		static struct platform_driver macb_driver = {
		.remove = __exit_p(macb_remove),
		.suspend = macb_suspend,
		.resume = macb_resume,
		.driver = {
		.name = "macb",
		.owner = THIS_MODULE,

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