On Tue, Jan 13, 2009 at 09:49:59PM +0000, flameman mayer wrote:
I'm Carlo Pisani, alias "flameman", and i'm running this little project: gentoo-m68k @ applem68k-LC475 ( http://elinux.org/Mac68k-Flameman )
That's a good summary of a lot of history, but most of us don't think much about the 2.2 kernel anymore. It's nice to have all of that in one place for browsing.
i'm working with kernel-2.6.27 and i have this issue macserial kernel panic unable to handle kernel NULL pointer de reference at virtual address 000004 modules linked in: m68k_handle_int+0x1c/0x36 call trace mac_scc_dispatch+0x3a/0x40 auto_irqhandler_fixup+0x4/0x6 also, i hacked the "emile-0.12" sources to build a monitor able to serially talk: it works for both the 2 LC475 serial lines :P is there anything about serial support for linux-m68k ?
The real driver for the serial ports on m68k Macintosh systems got removed from the tree a long time ago and has not been replaced as of this time. However, we still register mac_scc_dispatch as an interrupt handler for the line that the SCC uses. This looks like you got an interrupt for the serial chip and the interrupt code got confused trying to dispatch to nothing. I've never seen it happen, but it does look like that would be the expected behavior of the current code. It's on my list to fix, but I honestly haven't had much time to work on it. My plan is to either share or copy pmac_zilog.c which is the driver for the serial on PowerMacs rather than start from the Atari driver as mentioned in the web page above. It's not only the same chip but attached to the system in mostly the same way. Brad Boyer flar@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
