2.5.67: ppa driver & preempt == oops
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Quoted 9 lines · Andrew Morton
Quoted 5 lines · Gert Vervoort
ppa: Version 2.07 (for Linux 2.4.x)
ppa: Found device at ID 6, Attempting to use EPP 16 bit
ppa: Communication established with ID 6 using EPP 16 bit scsi0 : Iomega VPI0 (ppa) interface
bad: scheduling while atomic!
Quoted 4 lines
This patch should make the warnings go away.
I've been sitting on it for a while, waiting for someone to tell me if the ppa driver actually works. Perhaps that person is you?
I've responded to your questions more than once but evidently you haven't seen or been able to parse my responses.
To recap: I see a non-fatal kernel-oops and modprobe segfaults after successfully loading the ppa module. Once the ppa module is loaded the ppa driver actually does work with 2.5.x for at least x>50 (I haven't tried x<50).
I am using preemptable kernel and devfs and I do NOT see any of the warnings that Geert is seeing. The only problems I see with Linus's 2.5.x kernels is the segfault by modprobe, not with the function of ppa itself.
What definitely confused me for a long time is that the -ac series doesn't work with devfs+ppa because the scsi ppa device never shows up in /dev -- but I think that has nothing to do with Geert's problem or with your question either, just an aside to explain why my previous posts may have been confusing the issue.
BTW, the parallel Zip drive is the only SCSI device I have. Would my kernel config file be of any use to you?