Mesa (master): radv: Ignore CmdUpdateBuffer with size 0.

[Bas Nieuwenhuizen]

Module: Mesa
Branch: master
Commit: 8a535a8bc075debade456a4e48544bba483a99a8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8a535a8bc075debade456a4e48544bba483a99a8

Author: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
Date:   Thu Apr 13 00:04:23 2017 +0200

radv: Ignore CmdUpdateBuffer with size 0.

Signed-off-by: Bas Nieuwenhuizen <basni at google.com>
Reviewed-by: Dave Airlie <airlied at redhat.com>

---

 src/amd/vulkan/radv_meta_buffer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/amd/vulkan/radv_meta_buffer.c b/src/amd/vulkan/radv_meta_buffer.c
index 1e94f3b586..cfa0b9320e 100644
--- a/src/amd/vulkan/radv_meta_buffer.c
+++ b/src/amd/vulkan/radv_meta_buffer.c
@@ -523,6 +523,9 @@ void radv_CmdUpdateBuffer(
 	assert(!(dataSize & 3));
 	assert(!(va & 3));
 
+	if (!dataSize)
+		return;
+
 	if (dataSize < 4096) {
 		si_emit_cache_flush(cmd_buffer);