NetCube-Systems-Austria/kumquat-buildroot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sdl2: add patch to fix busy-loop in C library

Browse Source 
For some obscure reason, the order in which the libdrm/libgbm libraries
are loaded matters.

Without this fix, the first call to check_modesetting() will work and
load then unload all symbols properly, but the second call to this
function will lock up as soon as dlopen() is called on libdrm.

Swapping the order in which the libdrm and libgbm libraries are loaded
is enough to fix (or work around?) this issue.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
[yann.morin.1998@free.fr: add upstream commit URL]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Paul Cercueil 2019-12-20 17:04:38 +01:00 committed by Yann E. MORIN
parent 60f704502a
commit c84d36db7b
1 changed files with 41 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
package/sdl2/0002-fix-busy-loop-in-dlopen.patch Normal file
View File

@ -0,0 +1,41 @@
# HG changeset patch
# User Paul Cercueil <paul@crapouillou.net>
# Date 1576820863 28800
# Node ID 4f5bef55183c677d12a7da8f3392879ed50670a3
# Parent 01f16d7f36cb9f4fa02016e57fbe915fdea71cc8
kmsdrm: Fix busy-loop within libc's dlopen()
For some obscure reason, the order in which the libdrm/libgbm libraries
are loaded matters.
Without this fix, the first call to check_modesetting() will work and
load then unload all symbols properly, but the second call to this
function will lock up as soon as dlopen() is called on libdrm.
Swapping the order in which the libdrm and libgbm libraries are loaded
is enough to fix (or work around?) this issue.
Fixes #4891:
https://bugzilla.libsdl.org/show_bug.cgi?id=4891
Upstream: https://hg.libsdl.org/SDL/rev/4f5bef55183c
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
[yann.morin.1998@free.fr: add upstream commit URL]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
diff -r 01f16d7f36cb -r 4f5bef55183c src/video/kmsdrm/SDL_kmsdrmdyn.c
--- a/src/video/kmsdrm/SDL_kmsdrmdyn.c Thu Dec 19 21:45:44 2019 -0800
+++ b/src/video/kmsdrm/SDL_kmsdrmdyn.c Thu Dec 19 21:47:43 2019 -0800
@@ -50,8 +50,8 @@
#endif
static kmsdrmdynlib kmsdrmlibs[] = {
- {NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC},
- {NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM}
+ {NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC_GBM},
+ {NULL, SDL_VIDEO_DRIVER_KMSDRM_DYNAMIC}
};
static void *