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powerpc/eeh: Remove device_node dependency

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The patch removes struct eeh_dev::dn and the corresponding helper
functions: eeh_dev_to_of_node() and of_node_to_eeh_dev(). Instead,
eeh_dev_to_pdn() and pdn_to_eeh_dev() should be used to get the
pdn, which might contain device_node on PowerNV platform.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan
2015-03-17 16:15:08 +11:00
committed by Benjamin Herrenschmidt
parent 0bd785873c
commit c6406d8fbb
9 changed files with 55 additions and 81 deletions
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14
arch/powerpc/include/asm/pci-bridge.h
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@@ -201,25 +201,11 @@ static inline int pci_device_from_OF_node(struct device_node *np,
}
#if defined(CONFIG_EEH)
static inline struct eeh_dev *of_node_to_eeh_dev(struct device_node *dn)
{
/*
* For those OF nodes whose parent isn't PCI bridge, they
* don't have PCI_DN actually. So we have to skip them for
* any EEH operations.
*/
if (!dn || !PCI_DN(dn))
return NULL;
return PCI_DN(dn)->edev;
}
static inline struct eeh_dev *pdn_to_eeh_dev(struct pci_dn *pdn)
{
return pdn ? pdn->edev : NULL;
}
#else
#define of_node_to_eeh_dev(x) (NULL)
#define pdn_to_eeh_dev(x) (NULL)
#endif