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Date: Fri, 25 Apr 2008 18:12:19 +0100 From: Alan Cox <alan@...rguk.ukuu.org.uk> To: "Kathy Frazier" <kfrazier@...twyler-rd.com> Cc: "'Kathy Frazier'" <kfrazier@...twyler-rd.com>, <linux-kernel@...r.kernel.org> Subject: Re: Talking to parallel port in 2.6 kernel without using parport > One of our engineers downloaded source code a while back from > linux-2.6.18-rc7, but I am not sure how close that is to what is installed > on my system (uname -r returns 2.6.18-1.2798.fc6. When I set my printk to 8 > (echo 8 > /proc/sys/kernel/printk), there are no messages shown on the > failure. According to the source code I have, the only silent failure in > parport_register_device is: Nothing immediately strikes me. > When I change the flags from PARPORT_FLAG_EXCL to 0 in the call to > parport_register_device, the call returns a non-zero to indicate success. Do you have the printer driver loaded already ? (and does it behave if you do rmmod lp first) > Can you tell me what I am missing? Where can I get the actual source code > that goes with this version to further unravel this? >From the .fc6 it would be an old Fedora kernel so very close to standard 2.6.18 from kernel.org, but the Fedora Core kernels are available from the Fedora download pages - the .srpm package for each kernel is the one matching the same binary - so google for "2.6.18-1.2798.fc6.src.rpm" http://www.mjmwired.net/resources/mjm-fedora-fc6.html has a few notes on it. To be honest this area of the kernel hasn't changed much over recent times. Let me know if you can't figure out what is going on. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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