Hi Luigi, > I implemented the entry point in my driver and from user-land with the > pointer returned from mmap() I can access my SRAM. Unfortunately, every time > I try to write I have an "EMT trap". Actually, sometimes I have this error > also reading... > > Have you got any idea about this misbehave?
It's about time you provide us with more informatino on the problem in order for us to help you. I.e. what kernel version do you work with, how does your driver implement the mmap call, how do you "try to write" from userspace, what is the actual error, i.e. provide logs from the kernel, etc. As long as we don't have this info, we can only speculate. Cheers Detlev -- Q: What is a compact city? A: It's a city that can be guarded by finitely many near-sighted policemen. -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: [email protected] _______________________________________________ eldk mailing list [email protected] http://lists.denx.de/mailman/listinfo/eldk
