On Tue, 2010-02-09 at 09:32 +0000, Leggo, Adam (UK) wrote: > Hello, > > What is the best way of converting an existing device driver to work > under a real-time kernel? > > A device driver provided for a special serial card (Curtiss Wright SL240 > sFDFP card http://www.cwcembedded.com/products/0/1/461.html) works under > vanilla Linux (SLES SP10 SP2 kernel 2.6.16.60-0.21-smp), but compiling > the driver under the real time kernel (2.6.22.19-0.14-rt) the system > locks up and crashes. The rt kernel is being used to write large amounts > of data from the serial card to disk and testing has found the rt kernel > has the best consistent write performance. > > I have gone back to the supplier and they are not interested in > developing a real time version of the driver. So I am trying to modify > the driver myself. The driver code can be provided if anyone wants a > look (released under GPLv2). > Hi Adam, Generally this list is focused on the mainline RT patch set, and not so much on distro Kernels. I might be wrong, but out-of-tree drivers probably won't get too much TLC here either. That being said, your version of the SLERT Kernel is quite old. I would suggest the following: 1. first update your system and reproduce the issue 2. file a bug and attach the driver source here: http://bugzilla.novell.com 3. Report any specific error you could capture on a serial / net console, and provide additional details for "locks up and crashes". Thanks, Sven > Any assistance would be useful. > > Regards, > Adam Leggo > > > ******************************************************************** > This email and any attachments are confidential to the intended > recipient and may also be privileged. If you are not the intended > recipient please delete it from your system and notify the sender. > You should not copy it or use it for any purpose nor disclose or > distribute its contents to any other person. > ******************************************************************** > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
