From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 1 Jan 2011 14:23:35 +0000 (-0800)
Subject: compat: add generic functions for suspend/resume
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=dcd6955e683d812efef2df62deb4d19d9a15339a;p=openwrt%2Fstaging%2Fblogic.git

compat: add generic functions for suspend/resume

This define is used to generate a suspend and a resume function for pci
devices using the old power management interface. The new interface was
introduced in kernel 2.6.29.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---

diff --git a/include/linux/compat-2.6.29.h b/include/linux/compat-2.6.29.h
index 78b2d58d273a..b4e123691edf 100644
--- a/include/linux/compat-2.6.29.h
+++ b/include/linux/compat-2.6.29.h
@@ -278,6 +278,36 @@ static inline struct net *read_pnet(struct net * const *pnet)
 
 extern int		init_dummy_netdev(struct net_device *dev);
 
+#define compat_pci_suspend(fn)						\
+	int fn##_compat(struct pci_dev *pdev, pm_message_t state) 	\
+	{								\
+		int r;							\
+									\
+		r = fn(&pdev->dev);					\
+		if (r)							\
+			return r;					\
+									\
+		pci_save_state(pdev);					\
+		pci_disable_device(pdev);				\
+		pci_set_power_state(pdev, PCI_D3hot);			\
+									\
+		return 0;						\
+	}
+
+#define compat_pci_resume(fn)						\
+	int fn##_compat(struct pci_dev *pdev)				\
+	{								\
+		int r;							\
+									\
+		pci_set_power_state(pdev, PCI_D0);			\
+		r = pci_enable_device(pdev);				\
+		if (r)							\
+			return r;					\
+		pci_restore_state(pdev);				\
+									\
+		return fn(&pdev->dev);					\
+	}
+
 #else
 
 static inline void netdev_attach_ops(struct net_device *dev,
@@ -285,6 +315,10 @@ static inline void netdev_attach_ops(struct net_device *dev,
 {
 	dev->netdev_ops = ops;
 }
+
+#define compat_pci_suspend(fn)
+#define compat_pci_resume(fn)
+
 #endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)) */
 
 #endif /*  LINUX_26_29_COMPAT_H */