1*4882a593SmuzhiyunFrom 75ac1c5aad1ceec6d373390cfcfd473da6656786 Mon Sep 17 00:00:00 2001 2*4882a593SmuzhiyunFrom: Jeffy Chen <jeffy.chen@rock-chips.com> 3*4882a593SmuzhiyunDate: Wed, 12 Jan 2022 11:42:19 +0800 4*4882a593SmuzhiyunSubject: [PATCH 5/5] HACK: Bypass 5*4882a593Smuzhiyun drm{GetBusid,drmAuthMagic,SetInterfaceVersion} by default 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunA few versions of Mali GBM winsys would try to call those APIs. 8*4882a593Smuzhiyun 9*4882a593SmuzhiyunSet env "DRM_ALLOW_GET_BUSID" "DRM_ALLOW_AUTH_MAGIC" and 10*4882a593Smuzhiyun"DRM_ALLOW_SET_VERSION" to enable them. 11*4882a593Smuzhiyun 12*4882a593SmuzhiyunSigned-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> 13*4882a593Smuzhiyun--- 14*4882a593Smuzhiyun xf86drm.c | 9 +++++++++ 15*4882a593Smuzhiyun 1 file changed, 9 insertions(+) 16*4882a593Smuzhiyun 17*4882a593Smuzhiyundiff --git a/xf86drm.c b/xf86drm.c 18*4882a593Smuzhiyunindex e44b926..ac9fd85 100644 19*4882a593Smuzhiyun--- a/xf86drm.c 20*4882a593Smuzhiyun+++ b/xf86drm.c 21*4882a593Smuzhiyun@@ -1439,6 +1439,9 @@ drm_public char *drmGetBusid(int fd) 22*4882a593Smuzhiyun { 23*4882a593Smuzhiyun drm_unique_t u; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun+ if (!getenv("DRM_ALLOW_GET_BUSID")) 26*4882a593Smuzhiyun+ return strdup(""); 27*4882a593Smuzhiyun+ 28*4882a593Smuzhiyun memclear(u); 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun if (drmIoctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) 31*4882a593Smuzhiyun@@ -1497,6 +1500,9 @@ drm_public int drmAuthMagic(int fd, drm_magic_t magic) 32*4882a593Smuzhiyun { 33*4882a593Smuzhiyun drm_auth_t auth; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun+ if (!getenv("DRM_ALLOW_AUTH_MAGIC")) 36*4882a593Smuzhiyun+ return 0; 37*4882a593Smuzhiyun+ 38*4882a593Smuzhiyun memclear(auth); 39*4882a593Smuzhiyun auth.magic = magic; 40*4882a593Smuzhiyun if (drmIoctl(fd, DRM_IOCTL_AUTH_MAGIC, &auth)) 41*4882a593Smuzhiyun@@ -2995,6 +3001,9 @@ drm_public int drmSetInterfaceVersion(int fd, drmSetVersion *version) 42*4882a593Smuzhiyun int retcode = 0; 43*4882a593Smuzhiyun drm_set_version_t sv; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun+ if (!getenv("DRM_ALLOW_SET_VERSION")) 46*4882a593Smuzhiyun+ return 0; 47*4882a593Smuzhiyun+ 48*4882a593Smuzhiyun memclear(sv); 49*4882a593Smuzhiyun sv.drm_di_major = version->drm_di_major; 50*4882a593Smuzhiyun sv.drm_di_minor = version->drm_di_minor; 51*4882a593Smuzhiyun-- 52*4882a593Smuzhiyun2.20.1 53*4882a593Smuzhiyun 54