IB/ehca: Don't use phys_to_abs(), it's a nop

Since commit f5339277 phys_to_abs() is 100% a nop, so just remove it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 14 insertions, 19 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
index b781b2cb0624..47baa5456534 100644
--- a/drivers/infiniband/hw/ehca/ehca_mrmw.c
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -1870,9 +1870,8 @@ static int ehca_set_pagebuf_user1(struct ehca_mr_pginfo *pginfo,
                 for (i = pginfo->u.usr.next_nmap; i < chunk->nmap; ) {
                         pgaddr = page_to_pfn(sg_page(&chunk->page_list[i]))
                                 << PAGE_SHIFT ;
-                        *kpage = phys_to_abs(pgaddr +
-                                             (pginfo->next_hwpage *
-                                              pginfo->hwpage_size));
+                        *kpage = pgaddr + (pginfo->next_hwpage *
+                                           pginfo->hwpage_size);
                         if ( !(*kpage) ) {
                                 ehca_gen_err("pgaddr=%llx "
                                              "chunk->page_list[i]=%llx "
@@ -1927,7 +1926,7 @@ static int ehca_check_kpages_per_ate(struct scatterlist *page_list,
                 u64 pgaddr = page_to_pfn(sg_page(&page_list[t])) << PAGE_SHIFT;
                 if (ehca_debug_level >= 3)
                         ehca_gen_dbg("chunk_page=%llx value=%016llx", pgaddr,
-                                     *(u64 *)abs_to_virt(phys_to_abs(pgaddr)));
+                                     *(u64 *)abs_to_virt(pgaddr));
                 if (pgaddr - PAGE_SIZE != *prev_pgaddr) {
                         ehca_gen_err("uncontiguous page found pgaddr=%llx "
                                      "prev_pgaddr=%llx page_list_i=%x",
@@ -1962,7 +1961,7 @@ static int ehca_set_pagebuf_user2(struct ehca_mr_pginfo *pginfo,
                         if (nr_kpages == kpages_per_hwpage) {
                                 pgaddr = ( page_to_pfn(sg_page(&chunk->page_list[i]))
                                            << PAGE_SHIFT );
-                                *kpage = phys_to_abs(pgaddr);
+                                *kpage = pgaddr;
                                 if ( !(*kpage) ) {
                                         ehca_gen_err("pgaddr=%llx i=%x",
                                                      pgaddr, i);
@@ -1990,13 +1989,11 @@ static int ehca_set_pagebuf_user2(struct ehca_mr_pginfo *pginfo,
                                                  (pginfo->hwpage_size - 1)) >>
                                                 PAGE_SHIFT;
                                         nr_kpages -= pginfo->kpage_cnt;
-                                        *kpage = phys_to_abs(
-                                                pgaddr &
-                                                ~(pginfo->hwpage_size - 1));
+                                        *kpage = pgaddr &
+                                                 ~(pginfo->hwpage_size - 1);
                                 }
                                 if (ehca_debug_level >= 3) {
-                                        u64 val = *(u64 *)abs_to_virt(
-                                                phys_to_abs(pgaddr));
+                                        u64 val = *(u64 *)abs_to_virt(pgaddr);
                                         ehca_gen_dbg("kpage=%llx chunk_page=%llx "
                                                      "value=%016llx",
                                                      *kpage, pgaddr, val);
@@ -2084,9 +2081,8 @@ static int ehca_set_pagebuf_phys(struct ehca_mr_pginfo *pginfo,
                                              pginfo->num_hwpages, i);
                                 return -EFAULT;
                         }
-                        *kpage = phys_to_abs(
-                                (pbuf->addr & ~(pginfo->hwpage_size - 1)) +
-                                (pginfo->next_hwpage * pginfo->hwpage_size));
+                        *kpage = (pbuf->addr & ~(pginfo->hwpage_size - 1)) +
+                                 (pginfo->next_hwpage * pginfo->hwpage_size);
                         if ( !(*kpage) && pbuf->addr ) {
                                 ehca_gen_err("pbuf->addr=%llx pbuf->size=%llx "
                                              "next_hwpage=%llx", pbuf->addr,
@@ -2124,8 +2120,8 @@ static int ehca_set_pagebuf_fmr(struct ehca_mr_pginfo *pginfo,
         /* loop over desired page_list entries */
         fmrlist = pginfo->u.fmr.page_list + pginfo->u.fmr.next_listelem;
         for (i = 0; i < number; i++) {
-                *kpage = phys_to_abs((*fmrlist & ~(pginfo->hwpage_size - 1)) +
-                                     pginfo->next_hwpage * pginfo->hwpage_size);
+                *kpage = (*fmrlist & ~(pginfo->hwpage_size - 1)) +
+                           pginfo->next_hwpage * pginfo->hwpage_size;
                 if ( !(*kpage) ) {
                         ehca_gen_err("*fmrlist=%llx fmrlist=%p "
                                      "next_listelem=%llx next_hwpage=%llx",
@@ -2152,8 +2148,7 @@ static int ehca_set_pagebuf_fmr(struct ehca_mr_pginfo *pginfo,
                         u64 prev = *kpage;
                         /* check if adrs are contiguous */
                         for (j = 1; j < cnt_per_hwpage; j++) {
-                                u64 p = phys_to_abs(fmrlist[j] &
-                                                    ~(pginfo->hwpage_size - 1));
+                                u64 p = fmrlist[j] & ~(pginfo->hwpage_size - 1);
                                 if (prev + pginfo->u.fmr.fmr_pgsize != p) {
                                         ehca_gen_err("uncontiguous fmr pages "
                                                      "found prev=%llx p=%llx "
@@ -2388,8 +2383,8 @@ static int ehca_update_busmap(unsigned long pfn, unsigned long nr_pages)
                 memset(ehca_bmap, 0xFF, EHCA_TOP_MAP_SIZE);
         }
 
-        start_section = phys_to_abs(pfn * PAGE_SIZE) / EHCA_SECTSIZE;
-        end_section = phys_to_abs((pfn + nr_pages) * PAGE_SIZE) / EHCA_SECTSIZE;
+        start_section = (pfn * PAGE_SIZE) / EHCA_SECTSIZE;
+        end_section = ((pfn + nr_pages) * PAGE_SIZE) / EHCA_SECTSIZE;
         for (i = start_section; i < end_section; i++) {
                 int ret;
                 top = ehca_calc_index(i, EHCA_TOP_INDEX_SHIFT);