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authorDavid Herrmann <dh.herrmann@gmail.com>2014-09-20 11:43:32 +0200
committerDavid Herrmann <dh.herrmann@gmail.com>2014-09-20 11:46:49 +0200
commit0fbd4d113e0d2123e896e8005d1b7fe407c28c05 (patch)
tree157351076fb34fc9f767fa3fc5e673063c436d35 /shell-completion
parentf919ad9d3dc3e25f6eed268fe7eb5e922bcdb3b6 (diff)
terminal: fix mode sync for connectors
The GETXY ioctls of DRM are usually called twice by libdrm: Once to retrieve the number of objects, a second time with suitably sized buffers to actually retrieve all objects. In grdrm, we avoid these excessive calls and instead just call ioctls with cached buffers and resize them if they were too small. However, connectors need to read the mode list via EDID, which is horribly slow. As the kernel still cannot do that asynchronously (seriously, we need to fix this!), it has a hack to only do it if count_modes==0. This is fine with libdrm, as it calls every ioctl twice, anyway. However, we fail horribly with this as we usually never pass 0. Fix this by calling into GETCONNECTOR ioctls twice in case we received an hotplug event. Only in those cases, we need to re-read modes, so this should be totally fine.
Diffstat (limited to 'shell-completion')
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