powerpc/eeh: Drop unused argument in eeh_check_failure()

eeh_check_failure() is used to check frozen state of the PE which
owns the indicated I/O address. The argument "val" of the function
isn't used. The patch drops it and return the frozen state of the
PE as expected.

Cc: Vishal Mansur <vmansur@linux.vnet.ibm.com>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 14 insertions, 15 deletions

diff --git a/arch/powerpc/include/asm/eeh.h b/arch/powerpc/include/asm/eeh.h
index 757014fe23d3..c79869d4a652 100644
--- a/arch/powerpc/include/asm/eeh.h
+++ b/arch/powerpc/include/asm/eeh.h
@@ -274,8 +274,7 @@ void eeh_dev_phb_init_dynamic(struct pci_controller *phb);
 int eeh_init(void);
 int __init eeh_ops_register(struct eeh_ops *ops);
 int __exit eeh_ops_unregister(const char *name);
-unsigned long eeh_check_failure(const volatile void __iomem *token,
-				unsigned long val);
+int eeh_check_failure(const volatile void __iomem *token);
 int eeh_dev_check_failure(struct eeh_dev *edev);
 void eeh_addr_cache_build(void);
 void eeh_add_device_early(struct device_node *);
@@ -326,9 +325,9 @@ static inline void *eeh_dev_init(struct device_node *dn, void *data)
 
 static inline void eeh_dev_phb_init_dynamic(struct pci_controller *phb) { }
 
-static inline unsigned long eeh_check_failure(const volatile void __iomem *token, unsigned long val)
+static inline int eeh_check_failure(const volatile void __iomem *token)
 {
-	return val;
+	return 0;
 }
 
 #define eeh_dev_check_failure(x) (0)
@@ -359,7 +358,7 @@ static inline u8 eeh_readb(const volatile void __iomem *addr)
 {
 	u8 val = in_8(addr);
 	if (EEH_POSSIBLE_ERROR(val, u8))
-		return eeh_check_failure(addr, val);
+		eeh_check_failure(addr);
 	return val;
 }
 
@@ -367,7 +366,7 @@ static inline u16 eeh_readw(const volatile void __iomem *addr)
 {
 	u16 val = in_le16(addr);
 	if (EEH_POSSIBLE_ERROR(val, u16))
-		return eeh_check_failure(addr, val);
+		eeh_check_failure(addr);
 	return val;
 }
 
@@ -375,7 +374,7 @@ static inline u32 eeh_readl(const volatile void __iomem *addr)
 {
 	u32 val = in_le32(addr);
 	if (EEH_POSSIBLE_ERROR(val, u32))
-		return eeh_check_failure(addr, val);
+		eeh_check_failure(addr);
 	return val;
 }
 
@@ -383,7 +382,7 @@ static inline u64 eeh_readq(const volatile void __iomem *addr)
 {
 	u64 val = in_le64(addr);
 	if (EEH_POSSIBLE_ERROR(val, u64))
-		return eeh_check_failure(addr, val);
+		eeh_check_failure(addr);
 	return val;
 }
 
@@ -391,7 +390,7 @@ static inline u16 eeh_readw_be(const volatile void __iomem *addr)
 {
 	u16 val = in_be16(addr);
 	if (EEH_POSSIBLE_ERROR(val, u16))
-		return eeh_check_failure(addr, val);
+		eeh_check_failure(addr);
 	return val;
 }
 
@@ -399,7 +398,7 @@ static inline u32 eeh_readl_be(const volatile void __iomem *addr)
 {
 	u32 val = in_be32(addr);
 	if (EEH_POSSIBLE_ERROR(val, u32))
-		return eeh_check_failure(addr, val);
+		eeh_check_failure(addr);
 	return val;
 }
 
@@ -407,7 +406,7 @@ static inline u64 eeh_readq_be(const volatile void __iomem *addr)
 {
 	u64 val = in_be64(addr);
 	if (EEH_POSSIBLE_ERROR(val, u64))
-		return eeh_check_failure(addr, val);
+		eeh_check_failure(addr);
 	return val;
 }
 
@@ -421,7 +420,7 @@ static inline void eeh_memcpy_fromio(void *dest, const
 	 * were copied. Check all four bytes.
 	 */
 	if (n >= 4 && EEH_POSSIBLE_ERROR(*((u32 *)(dest + n - 4)), u32))
-		eeh_check_failure(src, *((u32 *)(dest + n - 4)));
+		eeh_check_failure(src);
 }
 
 /* in-string eeh macros */
@@ -430,7 +429,7 @@ static inline void eeh_readsb(const volatile void __iomem *addr, void * buf,
 {
 	_insb(addr, buf, ns);
 	if (EEH_POSSIBLE_ERROR((*(((u8*)buf)+ns-1)), u8))
-		eeh_check_failure(addr, *(u8*)buf);
+		eeh_check_failure(addr);
 }
 
 static inline void eeh_readsw(const volatile void __iomem *addr, void * buf,
@@ -438,7 +437,7 @@ static inline void eeh_readsw(const volatile void __iomem *addr, void * buf,
 {
 	_insw(addr, buf, ns);
 	if (EEH_POSSIBLE_ERROR((*(((u16*)buf)+ns-1)), u16))
-		eeh_check_failure(addr, *(u16*)buf);
+		eeh_check_failure(addr);
 }
 
 static inline void eeh_readsl(const volatile void __iomem *addr, void * buf,
@@ -446,7 +445,7 @@ static inline void eeh_readsl(const volatile void __iomem *addr, void * buf,
 {
 	_insl(addr, buf, nl);
 	if (EEH_POSSIBLE_ERROR((*(((u32*)buf)+nl-1)), u32))
-		eeh_check_failure(addr, *(u32*)buf);
+		eeh_check_failure(addr);
 }
 
 #endif /* CONFIG_PPC64 */