Patch "drm/ttm: Make ttm_bo_mem_compat available" has been added to the 4.4-stable tree

Patch "drm/ttm: Make ttm_bo_mem_compat available" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/ttm: Make ttm_bo_mem_compat available

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-ttm-make-ttm_bo_mem_compat-available.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 94477bff390aa4612d2332c8abafaae0a13d6923 Mon Sep 17 00:00:00 2001
From: Sinclair Yeh <syeh@vmware.com>
Date: Wed, 29 Jun 2016 12:58:49 -0700
Subject: drm/ttm: Make ttm_bo_mem_compat available

From: Sinclair Yeh <syeh@vmware.com>

commit 94477bff390aa4612d2332c8abafaae0a13d6923 upstream.

There are cases where it is desired to see if a proposed placement
is compatible with a buffer object before calling ttm_bo_validate().

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/ttm/ttm_bo.c |    7 ++++---
 include/drm/ttm/ttm_bo_api.h |   14 ++++++++++++++
 2 files changed, 18 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1004,9 +1004,9 @@ out_unlock:
 	return ret;
 }
 
-static bool ttm_bo_mem_compat(struct ttm_placement *placement,
-			      struct ttm_mem_reg *mem,
-			      uint32_t *new_flags)
+bool ttm_bo_mem_compat(struct ttm_placement *placement,
+		       struct ttm_mem_reg *mem,
+		       uint32_t *new_flags)
 {
 	int i;
 
@@ -1038,6 +1038,7 @@ static bool ttm_bo_mem_compat(struct ttm
 
 	return false;
 }
+EXPORT_SYMBOL(ttm_bo_mem_compat);
 
 int ttm_bo_validate(struct ttm_buffer_object *bo,
 			struct ttm_placement *placement,
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -316,6 +316,20 @@ ttm_bo_reference(struct ttm_buffer_objec
  */
 extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy,
 		       bool interruptible, bool no_wait);
+
+/**
+ * ttm_bo_mem_compat - Check if proposed placement is compatible with a bo
+ *
+ * @placement:  Return immediately if buffer is busy.
+ * @mem:  The struct ttm_mem_reg indicating the region where the bo resides
+ * @new_flags: Describes compatible placement found
+ *
+ * Returns true if the placement is compatible
+ */
+extern bool ttm_bo_mem_compat(struct ttm_placement *placement,
+			      struct ttm_mem_reg *mem,
+			      uint32_t *new_flags);
+
 /**
  * ttm_bo_validate
  *


Patches currently in stable-queue which might be from syeh@vmware.com are

queue-4.4/drm-ttm-make-ttm_bo_mem_compat-available.patch
queue-4.4/drm-vmwgfx-delay-pinning-fbdev-framebuffer-until-after-mode-set.patch
queue-4.4/drm-vmwgfx-add-an-option-to-change-assumed-fb-bpp.patch
queue-4.4/drm-vmwgfx-check-pin-count-before-attempting-to-move-a-buffer.patch
queue-4.4/drm-vmwgfx-work-around-mode-set-failure-in-2d-vms.patch
queue-4.4/drm-vmwgfx-fix-error-paths-when-mapping-framebuffer.patch