Re: [Linux-fbdev-devel] [PATCH] add mutex to fbdev for fb_mmap locking

[Alan C. <al...@lx...>]

> And then there is TIOCGSOFTCAR, which is just insane, and apparently gets 
> the lock in order to just test _one_ bit (C_CLOCAL). Never mind that if 

If you don't take it there are cases where it gets cleared by drivers
momentarily and put back so you would give the wrong answer.

> something is changing it, we really don't care _which_ case we return, so 
> the lock is likely pointless to begin with (can "termios" actually change 
> as a pointer?). But then does the user space access with the lock held.

I'll fix those over the next few days to copy first, its pretty trivial
stuff