From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Wed, 11 Nov 2015 18:50:55 +0000 (+0200)
Subject: card: fix has_atomic if libdrm does not have atomic support
X-Git-Url: https://git.ti.com/gitweb?p=android%2Fexternal-libkmsxx.git;a=commitdiff_plain;h=131a6e455743b757f8a5f79aefa956b046dce4ba;ds=inline

card: fix has_atomic if libdrm does not have atomic support

If libdrm was missing DRM_CLIENT_CAP_ATOMIC, but the driver still
supported atomic modesetting, m_has_atomic was set to true. The end
result was that test apps thought they can use atomic modesetting, but
it wasn't functional in the libkmsxx.
---

diff --git a/libkms++/card.cpp b/libkms++/card.cpp
index 2bb6673..a0e395e 100644
--- a/libkms++/card.cpp
+++ b/libkms++/card.cpp
@@ -11,10 +11,6 @@
 
 #include "kms++.h"
 
-#ifndef DRM_CLIENT_CAP_ATOMIC
-#define DRM_CLIENT_CAP_ATOMIC 3
-#endif
-
 using namespace std;
 
 namespace kms
@@ -42,12 +38,16 @@ Card::Card()
 		m_has_universal_planes = false;
 	}
 
+#ifdef DRM_CLIENT_CAP_ATOMIC
 	if (getenv("LIBKMSXX_DISABLE_ATOMIC") == 0) {
 		r = drmSetClientCap(m_fd, DRM_CLIENT_CAP_ATOMIC, 1);
 		m_has_atomic = r == 0;
 	} else {
 		m_has_atomic = false;
 	}
+#else
+	m_has_atomic = false;
+#endif
 
 	uint64_t has_dumb;
 	r = drmGetCap(fd, DRM_CAP_DUMB_BUFFER, &has_dumb);