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powerpc/eeh: Remove eeh device from OF node

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Originally, the PCI sensitive OF node is tracing the eeh device
through struct device_node->edev. However, it was regarded as
bad idea.

The patch removes struct device_node->edev and uses PCI_DN to
trace the corresponding eeh device according to BenH's comments.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan 2012-03-20 21:30:27 +00:00 • committed by Benjamin Herrenschmidt
parent e22057c859
commit 2a0352fa4a
3 changed files with 9 additions and 11 deletions
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8
arch/powerpc/include/asm/pci-bridge.h
View file

@ -155,6 +155,7 @@ struct pci_dn {
struct pci_dev *pcidev; /* back-pointer to the pci device */ struct pci_dev *pcidev; /* back-pointer to the pci device */
#ifdef CONFIG_EEH #ifdef CONFIG_EEH
struct eeh_dev *edev; /* eeh device */
int class_code; /* pci device class */ int class_code; /* pci device class */
int eeh_mode; /* See eeh.h for possible EEH_MODEs */ int eeh_mode; /* See eeh.h for possible EEH_MODEs */
int eeh_config_addr; int eeh_config_addr;
@ -185,6 +186,13 @@ static inline int pci_device_from_OF_node(struct device_node *np,
return 0; return 0;
} }
#if defined(CONFIG_EEH)
static inline struct eeh_dev *of_node_to_eeh_dev(struct device_node *dn)
{
return PCI_DN(dn)->edev;
}
#endif
/** Find the bus corresponding to the indicated device node */ /** Find the bus corresponding to the indicated device node */
extern struct pci_bus *pcibios_find_pci_bus(struct device_node *dn); extern struct pci_bus *pcibios_find_pci_bus(struct device_node *dn);

2
arch/powerpc/platforms/pseries/eeh_dev.c
View file

@ -62,7 +62,7 @@ void * __devinit eeh_dev_init(struct device_node *dn, void *data)
} }
/* Associate EEH device with OF node */ /* Associate EEH device with OF node */
dn->edev = edev; PCI_DN(dn)->edev = edev;
edev->dn = dn; edev->dn = dn;
edev->phb = phb; edev->phb = phb;

10
include/linux/of.h
View file

@ -58,9 +58,6 @@ struct device_node {
struct kref kref; struct kref kref;
unsigned long _flags; unsigned long _flags;
void *data; void *data;
#if defined(CONFIG_EEH)
struct eeh_dev *edev;
#endif
#if defined(CONFIG_SPARC) #if defined(CONFIG_SPARC)
char *path_component_name; char *path_component_name;
unsigned int unique_id; unsigned int unique_id;
@ -75,13 +72,6 @@ struct of_phandle_args {
uint32_t args[MAX_PHANDLE_ARGS]; uint32_t args[MAX_PHANDLE_ARGS];
}; };
#if defined(CONFIG_EEH)
static inline struct eeh_dev *of_node_to_eeh_dev(struct device_node *dn)
{
return dn->edev;
}
#endif
#ifdef CONFIG_OF_DYNAMIC #ifdef CONFIG_OF_DYNAMIC
extern struct device_node *of_node_get(struct device_node *node); extern struct device_node *of_node_get(struct device_node *node);
extern void of_node_put(struct device_node *node); extern void of_node_put(struct device_node *node);