Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

Merge sparc bug fixes that didn't make it into v3.9 into
sparc-next.

Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 35 insertions, 43 deletions

diff --git a/arch/parisc/include/asm/cacheflush.h b/arch/parisc/include/asm/cacheflush.h
index 79f694f3ad9..f0e2784e7cc 100644
--- a/arch/parisc/include/asm/cacheflush.h
+++ b/arch/parisc/include/asm/cacheflush.h
@@ -140,7 +140,10 @@ static inline void *kmap(struct page *page)
 	return page_address(page);
 }
 
-#define kunmap(page)			kunmap_parisc(page_address(page))
+static inline void kunmap(struct page *page)
+{
+	kunmap_parisc(page_address(page));
+}
 
 static inline void *kmap_atomic(struct page *page)
 {
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index 7df49fad29f..1e40d7f86be 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -16,6 +16,8 @@
 #include <asm/processor.h>
 #include <asm/cache.h>
 
+extern spinlock_t pa_dbit_lock;
+
 /*
  * kern_addr_valid(ADDR) tests if ADDR is pointing to valid kernel
  * memory.  For the return value to be meaningful, ADDR must be >=
@@ -44,8 +46,11 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
 
 #define set_pte_at(mm, addr, ptep, pteval)                      \
 	do {                                                    \
+		unsigned long flags;				\
+		spin_lock_irqsave(&pa_dbit_lock, flags);	\
 		set_pte(ptep, pteval);                          \
 		purge_tlb_entries(mm, addr);                    \
+		spin_unlock_irqrestore(&pa_dbit_lock, flags);	\
 	} while (0)
 
 #endif /* !__ASSEMBLY__ */
@@ -435,48 +440,46 @@ extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);
 
 static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
 {
-#ifdef CONFIG_SMP
+	pte_t pte;
+	unsigned long flags;
+
 	if (!pte_young(*ptep))
 		return 0;
-	return test_and_clear_bit(xlate_pabit(_PAGE_ACCESSED_BIT), &pte_val(*ptep));
-#else
-	pte_t pte = *ptep;
-	if (!pte_young(pte))
+
+	spin_lock_irqsave(&pa_dbit_lock, flags);
+	pte = *ptep;
+	if (!pte_young(pte)) {
+		spin_unlock_irqrestore(&pa_dbit_lock, flags);
 		return 0;
-	set_pte_at(vma->vm_mm, addr, ptep, pte_mkold(pte));
+	}
+	set_pte(ptep, pte_mkold(pte));
+	purge_tlb_entries(vma->vm_mm, addr);
+	spin_unlock_irqrestore(&pa_dbit_lock, flags);
 	return 1;
-#endif
 }
 
-extern spinlock_t pa_dbit_lock;
-
 struct mm_struct;
 static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	pte_t old_pte;
+	unsigned long flags;
 
-	spin_lock(&pa_dbit_lock);
+	spin_lock_irqsave(&pa_dbit_lock, flags);
 	old_pte = *ptep;
 	pte_clear(mm,addr,ptep);
-	spin_unlock(&pa_dbit_lock);
+	purge_tlb_entries(mm, addr);
+	spin_unlock_irqrestore(&pa_dbit_lock, flags);
 
 	return old_pte;
 }
 
 static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
-#ifdef CONFIG_SMP
-	unsigned long new, old;
-
-	do {
-		old = pte_val(*ptep);
-		new = pte_val(pte_wrprotect(__pte (old)));
-	} while (cmpxchg((unsigned long *) ptep, old, new) != old);
+	unsigned long flags;
+	spin_lock_irqsave(&pa_dbit_lock, flags);
+	set_pte(ptep, pte_wrprotect(*ptep));
 	purge_tlb_entries(mm, addr);
-#else
-	pte_t old_pte = *ptep;
-	set_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
-#endif
+	spin_unlock_irqrestore(&pa_dbit_lock, flags);
 }
 
 #define pte_same(A,B)	(pte_val(A) == pte_val(B))
diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h
index d1fb79a36f3..6182832e5b6 100644
--- a/arch/parisc/include/asm/thread_info.h
+++ b/arch/parisc/include/asm/thread_info.h
@@ -77,8 +77,6 @@ struct thread_info {
 #define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP |	\
 				 _TIF_BLOCKSTEP)
 
-#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_PARISC_THREAD_INFO_H */
diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index 4ba2c93770f..e0a82358517 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -181,30 +181,24 @@ struct exception_data {
 #if !defined(CONFIG_64BIT)
 
 #define __put_kernel_asm64(__val,ptr) do {		    \
-	u64 __val64 = (u64)(__val);			    \
-	u32 hi = (__val64) >> 32;			    \
-	u32 lo = (__val64) & 0xffffffff;		    \
 	__asm__ __volatile__ (				    \
 		"\n1:\tstw %2,0(%1)"			    \
-		"\n2:\tstw %3,4(%1)\n\t"		    \
+		"\n2:\tstw %R2,4(%1)\n\t"		    \
 		ASM_EXCEPTIONTABLE_ENTRY(1b,fixup_put_user_skip_2)\
 		ASM_EXCEPTIONTABLE_ENTRY(2b,fixup_put_user_skip_1)\
 		: "=r"(__pu_err)                            \
-		: "r"(ptr), "r"(hi), "r"(lo), "0"(__pu_err) \
+		: "r"(ptr), "r"(__val), "0"(__pu_err) \
 		: "r1");				    \
 } while (0)
 
 #define __put_user_asm64(__val,ptr) do {	    	    \
-	u64 __val64 = (u64)(__val);			    \
-	u32 hi = (__val64) >> 32;			    \
-	u32 lo = (__val64) & 0xffffffff;		    \
 	__asm__ __volatile__ (				    \
 		"\n1:\tstw %2,0(%%sr3,%1)"		    \
-		"\n2:\tstw %3,4(%%sr3,%1)\n\t"		    \
+		"\n2:\tstw %R2,4(%%sr3,%1)\n\t"		    \
 		ASM_EXCEPTIONTABLE_ENTRY(1b,fixup_put_user_skip_2)\
 		ASM_EXCEPTIONTABLE_ENTRY(2b,fixup_put_user_skip_1)\
 		: "=r"(__pu_err)                            \
-		: "r"(ptr), "r"(hi), "r"(lo), "0"(__pu_err) \
+		: "r"(ptr), "r"(__val), "0"(__pu_err) \
 		: "r1");				    \
 } while (0)
 
diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h
index ae9a46cbfd9..74d835820ee 100644
--- a/arch/parisc/include/asm/unistd.h
+++ b/arch/parisc/include/asm/unistd.h
@@ -170,12 +170,4 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
 
 #undef STR
 
-/*
- * "Conditional" syscalls
- *
- * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
- * but it doesn't work on all toolchains, so we just do it by hand
- */
-#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
-
 #endif /* _ASM_PARISC_UNISTD_H_ */
diff --git a/arch/parisc/include/uapi/asm/socket.h b/arch/parisc/include/uapi/asm/socket.h
index 526e4b9aece..70c512a386f 100644
--- a/arch/parisc/include/uapi/asm/socket.h
+++ b/arch/parisc/include/uapi/asm/socket.h
@@ -71,6 +71,8 @@
 
 #define SO_LOCK_FILTER		0x4025
 
+#define SO_SELECT_ERR_QUEUE	0x4026
+
 /* O_NONBLOCK clashes with the bits used for socket types.  Therefore we
  * have to define SOCK_NONBLOCK to a different value here.
  */