Patch "drm/vmwgfx: use *_32_bits() macros" has been added to the 4.4-stable tree

Patch "drm/vmwgfx: use *_32_bits() macros" 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/vmwgfx: use *_32_bits() macros

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-vmwgfx-use-_32_bits-macros.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 0e7c875d1ae9dcf4d8c6018a45e5529feaef8956 Mon Sep 17 00:00:00 2001
From: Paul Bolle <pebolle@tiscali.nl>
Date: Thu, 3 Mar 2016 11:26:10 +0100
Subject: drm/vmwgfx: use *_32_bits() macros

From: Paul Bolle <pebolle@tiscali.nl>

commit 0e7c875d1ae9dcf4d8c6018a45e5529feaef8956 upstream.

Use the upper_32_bits() macro instead of the four line equivalent that
triggers a GCC warning on 32 bits x86:
    drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c: In function 'vmw_cmdbuf_header_submit':
    drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c:297:25: warning: right shift count >= width of type [-Wshift-count-overflow]
       val = (header->handle >> 32);
                             ^

And use the lower_32_bits() macro instead of and-ing with a 32 bits
mask.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1457000770-2317-1-git-send-email-pebolle@tiscali.nl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c
@@ -293,13 +293,10 @@ static int vmw_cmdbuf_header_submit(stru
 	struct vmw_cmdbuf_man *man = header->man;
 	u32 val;
 
-	if (sizeof(header->handle) > 4)
-		val = (header->handle >> 32);
-	else
-		val = 0;
+	val = upper_32_bits(header->handle);
 	vmw_write(man->dev_priv, SVGA_REG_COMMAND_HIGH, val);
 
-	val = (header->handle & 0xFFFFFFFFULL);
+	val = lower_32_bits(header->handle);
 	val |= header->cb_context & SVGA_CB_CONTEXT_MASK;
 	vmw_write(man->dev_priv, SVGA_REG_COMMAND_LOW, val);
 


Patches currently in stable-queue which might be from pebolle@tiscali.nl are

queue-4.4/drm-vmwgfx-use-_32_bits-macros.patch