xf86pciBus.c:1464:21: warning: comparison of constant 256 with expression of type 'uint8_t' (aka 'unsigned char') is always true [-Wtautological-constant-out-of-range-compare]
if (pVideo->bus < 256)
The code used to be in xf86FormatPciBusNumber and compared parameter which was int, but since b967bf2a it was inlined now it works with uint8_t.