https://bugs.freedesktop.org/show_bug.cgi?id=103283
Bug ID: 103283
Summary: drm_get_device_name_for_fd is broken on FreeBSD
Product: Mesa
Version: 17.2
Hardware: Other
OS: FreeBSD
Status: NEW
Severity: normal
Priority: medium
Component: EGL/Wayland
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Created attachment 134848
--> https://bugs.freedesktop.org/attachment.cgi?id=134848&action=edit
patch-src_loader_loader.c
The function drm_get_device_name_for_fd in src/loader/loader.c uses
dev_node_from_fd which uses Linux-specific major/minor stuff, which does not
work correctly on FreeBSD.
Because of this, Wayland EGL clients on FreeBSD receive /dev/dri/card408
instead of /dev/dri/card0 as the device path, and fall back to software
rendering :D
The attached patch replaces the code with a call to drmGetDeviceNameFromFd2,
which is patched in our packages to work correctly
(https://github.com/freebsd/freebsd-ports/blob/master/graphics/libdrm/files/patch-xf86drm.c).
(dev_node_from_fd is probably dead code after this patch)
Why wasn't drmGetDeviceNameFromFd2 used in the first place? Why was libdrm's
functionality duplicated?
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