[PATCH] ppc64: Remove redundant uses of physRpn_to_absRpn

physRpn_to_absRpn is a no-op on non-iSeries platforms, remove the two
redundant calls.

There's only one caller on iSeries so fold the logic in there so we can get
rid of it completely.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

4 files changed, 6 insertions, 13 deletions

diff --git a/arch/ppc64/kernel/iSeries_htab.c b/arch/ppc64/kernel/iSeries_htab.c
index b0250ae4a72a..2192055a90a0 100644
--- a/arch/ppc64/kernel/iSeries_htab.c
+++ b/arch/ppc64/kernel/iSeries_htab.c
@@ -41,6 +41,7 @@ static long iSeries_hpte_insert(unsigned long hpte_group, unsigned long va,
                                 unsigned long prpn, unsigned long vflags,
                                 unsigned long rflags)
 {
+        unsigned long arpn;
         long slot;
         hpte_t lhpte;
         int secondary = 0;
@@ -70,8 +71,10 @@ static long iSeries_hpte_insert(unsigned long hpte_group, unsigned long va,
                 slot &= 0x7fffffffffffffff;
         }
 
+        arpn = phys_to_abs(prpn << PAGE_SHIFT) >> PAGE_SHIFT;
+
         lhpte.v = (va >> 23) << HPTE_V_AVPN_SHIFT | vflags | HPTE_V_VALID;
-        lhpte.r = (physRpn_to_absRpn(prpn) << HPTE_R_RPN_SHIFT) | rflags;
+        lhpte.r = (arpn << HPTE_R_RPN_SHIFT) | rflags;
 
         /* Now fill in the actual HPTE */
         HvCallHpt_addValidate(slot, secondary, &lhpte);
diff --git a/arch/ppc64/kernel/pSeries_lpar.c b/arch/ppc64/kernel/pSeries_lpar.c
index 56845543c891..0a3ddc9227c5 100644
--- a/arch/ppc64/kernel/pSeries_lpar.c
+++ b/arch/ppc64/kernel/pSeries_lpar.c
@@ -278,7 +278,6 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
                               unsigned long va, unsigned long prpn,
                               unsigned long vflags, unsigned long rflags)
 {
-        unsigned long arpn = physRpn_to_absRpn(prpn);
         unsigned long lpar_rc;
         unsigned long flags;
         unsigned long slot;
@@ -289,7 +288,7 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
         if (vflags & HPTE_V_LARGE)
                 hpte_v &= ~(1UL << HPTE_V_AVPN_SHIFT);
 
-        hpte_r = (arpn << HPTE_R_RPN_SHIFT) | rflags;
+        hpte_r = (prpn << HPTE_R_RPN_SHIFT) | rflags;
 
         /* Now fill in the actual HPTE */
         /* Set CEC cookie to 0         */
diff --git a/arch/ppc64/mm/hash_native.c b/arch/ppc64/mm/hash_native.c
index a6abd3a979bf..7626bb59954d 100644
--- a/arch/ppc64/mm/hash_native.c
+++ b/arch/ppc64/mm/hash_native.c
@@ -51,7 +51,6 @@ long native_hpte_insert(unsigned long hpte_group, unsigned long va,
                         unsigned long prpn, unsigned long vflags,
                         unsigned long rflags)
 {
-        unsigned long arpn = physRpn_to_absRpn(prpn);
         hpte_t *hptep = htab_address + hpte_group;
         unsigned long hpte_v, hpte_r;
         int i;
@@ -74,7 +73,7 @@ long native_hpte_insert(unsigned long hpte_group, unsigned long va,
         hpte_v = (va >> 23) << HPTE_V_AVPN_SHIFT | vflags | HPTE_V_VALID;
         if (vflags & HPTE_V_LARGE)
                 va &= ~(1UL << HPTE_V_AVPN_SHIFT);
-        hpte_r = (arpn << HPTE_R_RPN_SHIFT) | rflags;
+        hpte_r = (prpn << HPTE_R_RPN_SHIFT) | rflags;
 
         hptep->r = hpte_r;
         /* Guarantee the second dword is visible before the valid bit */
diff --git a/include/asm-ppc64/abs_addr.h b/include/asm-ppc64/abs_addr.h
index 025527742fef..ab4320c1cf5b 100644
--- a/include/asm-ppc64/abs_addr.h
+++ b/include/asm-ppc64/abs_addr.h
@@ -56,14 +56,6 @@ static inline unsigned long phys_to_abs(unsigned long pa)
         return chunk_to_addr(chunk) + (pa & MSCHUNKS_OFFSET_MASK);
 }
 
-static inline unsigned long
-physRpn_to_absRpn(unsigned long rpn)
-{
-        unsigned long pa = rpn << PAGE_SHIFT;
-        unsigned long aa = phys_to_abs(pa);
-        return (aa >> PAGE_SHIFT);
-}
-
 /* A macro so it can take pointers or unsigned long. */
 #define abs_to_phys(aa) lmb_abs_to_phys((unsigned long)(aa))