This was reported before, the current mantis driver will cause a page fault in mantis_dvb_start_feed. The reason for this is commit f5b1f9d491bfabbd23ec415e647f3d65ea1930eb "Implement HIF Mem Read/Write operations". I don't know how HIF memory reads/writes are supposed to work, but there seems to be some mixup between register contents and register addresses. Clearly, 0xfffffff is not a valid mmaped reg address and as such writing to it blows up accordingly. The attached patch fixes that (reverts part of the above commit). The same bug also seems to be present in the hif.c file, though I don't know how it should work there (and it looks like that code won't get touched here). Roland
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