Merge tag 'v4.4-rc2' into drm-intel-next-queued

Linux 4.4-rc2

Backmerge to get at

commit 1b0e3a049efe471c399674fd954500ce97438d30
Author: Imre Deak <imre.deak@intel.com>
Date:   Thu Nov 5 23:04:11 2015 +0200

    drm/i915/skl: disable display side power well support for now

so that we can proplery re-eanble skl power wells in -next.

Conflicts are just adjacent lines changed, except for intel_fbdev.c
where we need to interleave the changs. Nothing nefarious.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

1 files changed, 24 insertions, 22 deletions

diff --git a/drivers/infiniband/hw/qib/qib_mr.c b/drivers/infiniband/hw/qib/qib_mr.c
index 19220dcb9a3b..294f5c706be9 100644
--- a/drivers/infiniband/hw/qib/qib_mr.c
+++ b/drivers/infiniband/hw/qib/qib_mr.c
@@ -303,6 +303,7 @@ int qib_dereg_mr(struct ib_mr *ibmr)
 	int ret = 0;
 	unsigned long timeout;
 
+	kfree(mr->pages);
 	qib_free_lkey(&mr->mr);
 
 	qib_put_mr(&mr->mr); /* will set completion if last */
@@ -323,7 +324,7 @@ out:
 
 /*
  * Allocate a memory region usable with the
- * IB_WR_FAST_REG_MR send work request.
+ * IB_WR_REG_MR send work request.
  *
  * Return the memory region on success, otherwise return an errno.
  */
@@ -340,37 +341,38 @@ struct ib_mr *qib_alloc_mr(struct ib_pd *pd,
 	if (IS_ERR(mr))
 		return (struct ib_mr *)mr;
 
+	mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
+	if (!mr->pages)
+		goto err;
+
 	return &mr->ibmr;
+
+err:
+	qib_dereg_mr(&mr->ibmr);
+	return ERR_PTR(-ENOMEM);
 }
 
-struct ib_fast_reg_page_list *
-qib_alloc_fast_reg_page_list(struct ib_device *ibdev, int page_list_len)
+static int qib_set_page(struct ib_mr *ibmr, u64 addr)
 {
-	unsigned size = page_list_len * sizeof(u64);
-	struct ib_fast_reg_page_list *pl;
-
-	if (size > PAGE_SIZE)
-		return ERR_PTR(-EINVAL);
-
-	pl = kzalloc(sizeof(*pl), GFP_KERNEL);
-	if (!pl)
-		return ERR_PTR(-ENOMEM);
+	struct qib_mr *mr = to_imr(ibmr);
 
-	pl->page_list = kzalloc(size, GFP_KERNEL);
-	if (!pl->page_list)
-		goto err_free;
+	if (unlikely(mr->npages == mr->mr.max_segs))
+		return -ENOMEM;
 
-	return pl;
+	mr->pages[mr->npages++] = addr;
 
-err_free:
-	kfree(pl);
-	return ERR_PTR(-ENOMEM);
+	return 0;
 }
 
-void qib_free_fast_reg_page_list(struct ib_fast_reg_page_list *pl)
+int qib_map_mr_sg(struct ib_mr *ibmr,
+		  struct scatterlist *sg,
+		  int sg_nents)
 {
-	kfree(pl->page_list);
-	kfree(pl);
+	struct qib_mr *mr = to_imr(ibmr);
+
+	mr->npages = 0;
+
+	return ib_sg_to_pages(ibmr, sg, sg_nents, qib_set_page);
 }
 
 /**