Adam Kaczynski wrote: > > Alex Zeffertt wrote: > >> Sanjay, >> >>> 1. where can I get m8260_cpm_dpfree() function implementation ? >> >> You could try porting the dpfree function in >> arch/ppc/8xx_io/commproc.c. However, this function should only really >> be necessary if you wish to rmmod the driver. >> > > I had the same problem last year when I was working with the simple ATM > driver > (http://www.dgt-lab.com.pl/Serwis/ATMdrv8260.tar.gz ) > and I decided to make a kind of not very nice looking work-around - > simply to grab and later free the block of memory I needed from the top. > > This feature was important for us to debug the driver since I was able > to load, test and later rmmod the driver. However this work-around would > work only if the driver is loaded as the last one (from the drivers > using dp_mem). > > I think that there is no reason to implement any more robust allocator > for dp memory since it is used only for very special purposes, allocated > only during drivers initialization and because this resource is so > limited that any normal allocation mechanism (with a pool of memory > blocks) would be inefficient. > > Regards, > Adam > > > > > Hi
I just want to point out that I have posted a solution to that problem some time ago for the 8xx. Try searching the list for the patches, they implement a proper dpalloc/dpfree with storage management. Regards Pantelis ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
