Date: Sun, 7 May 2000 10:59:57 -0400 (EDT)
From: James Simmons <jsimmons@acsu.buffalo.edu>
What happened to if (fb->open) return -EBUSY; in sbusfb.c? This is
wrong!!! Is this so brain dead apps like fbvt can work on this
platform. Well it's heading in the wrong direction. I posted
before why this is a bad idea. You should not allow multiple
process access to /dev/fb at the same time. You are going to have
problems!!!!
I have to allow it for DGA support in xfree86-4.0 etc. It will
also be needed to DRI/DRM direct 3d rendering support with Creator3d
et al.
What is the big deal?
With DGA and DRI/DRM the applications using the same fb device at
the same time have to use appropriate synchronization mechanisms to
access the device safely.
Later,
David S. Miller
davem@redhat.com
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