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SubjectRe: 2.4.21-pre4 comparison bugs (Even More Again)

Ok. In addition to "unsigned_var < 0" kind of error checks that
never work, there is different non-working kind of checks:
"pointer < 0".
We can see these at:
drivers/char/joystick/tmdc.c:318 if (tmdc->abs[i] < 0) continue;
drivers/char/epca.c:3758 if (board.port <= 0)
drivers/char/epca.c:3770 if (board.membase <= 0)
drivers/media/radio/radio-cadet.c:541 if(request_region(io,2, "cadet-probe")>=0) {
drivers/net/wan/dscc4.c:1760 if (dscc4_init_dummy_skb(dpriv) < 0)

Given the fact that you seem not to like casts to signed int,
how do you propose to fix these?

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