IB/ehca: Use #define for "pages per register_rpage" instead of hardcoded value

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 11 insertions, 8 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
index 7c1656a7e1af..1fe4f726cee9 100644
--- a/drivers/infiniband/hw/ehca/ehca_mrmw.c
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -48,6 +48,9 @@
 #include "hcp_if.h"
 #include "hipz_hw.h"
 
+/* max number of rpages (per hcall register_rpages) */
+#define MAX_RPAGES 512
+
 static struct kmem_cache *mr_cache;
 static struct kmem_cache *mw_cache;
 
@@ -1027,14 +1030,14 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
         }
 
         /* max 512 pages per shot */
-        for (i = 0; i < ((pginfo->num_4k + 512 - 1) / 512); i++) {
+        for (i = 0; i < ((pginfo->num_4k + MAX_RPAGES - 1) / MAX_RPAGES); i++) {
 
-                if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) {
-                        rnum = pginfo->num_4k % 512; /* last shot */
+                if (i == ((pginfo->num_4k + MAX_RPAGES - 1) / MAX_RPAGES) - 1) {
+                        rnum = pginfo->num_4k % MAX_RPAGES; /* last shot */
                         if (rnum == 0)
-                                rnum = 512;      /* last shot is full */
+                                rnum = MAX_RPAGES;      /* last shot is full */
                 } else
-                        rnum = 512;
+                        rnum = MAX_RPAGES;
 
                 if (rnum > 1) {
                         ret = ehca_set_pagebuf(e_mr, pginfo, rnum, kpage);
@@ -1066,7 +1069,7 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
                                                  0, /* pagesize 4k */
                                                  0, rpage, rnum);
 
-                if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) {
+                if (i == ((pginfo->num_4k + MAX_RPAGES - 1) / MAX_RPAGES) - 1) {
                         /*
                          * check for 'registration complete'==H_SUCCESS
                          * and for 'page registered'==H_PAGE_REGISTERED
@@ -1215,7 +1218,7 @@ int ehca_rereg_mr(struct ehca_shca *shca,
         int rereg_3_hcall = 0; /* 1: use 3 hipz calls for reregistration */
 
         /* first determine reregistration hCall(s) */
-        if ((pginfo->num_4k > 512) || (e_mr->num_4k > 512) ||
+        if ((pginfo->num_4k > MAX_RPAGES) || (e_mr->num_4k > MAX_RPAGES) ||
             (pginfo->num_4k > e_mr->num_4k)) {
                 ehca_dbg(&shca->ib_device, "Rereg3 case, pginfo->num_4k=%lx "
                          "e_mr->num_4k=%x", pginfo->num_4k, e_mr->num_4k);
@@ -1306,7 +1309,7 @@ int ehca_unmap_one_fmr(struct ehca_shca *shca,
         struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
 
         /* first check if reregistration hCall can be used for unmap */
-        if (e_fmr->fmr_max_pages > 512) {
+        if (e_fmr->fmr_max_pages > MAX_RPAGES) {
                 rereg_1_hcall = 0;
                 rereg_3_hcall = 1;
         }