[microblaze-uclinux] Changes in entry.S for syscalls (mmu version)

[nick.degilio@xxxxxxxxx]

I have question about some changes made
in arch/microblaze/kernel/entry.S  in the latest development tree
for the MMU version. 

 I checked out the development
tree and then updated our local copy to get the latest fixes/changes.  
I got the kernel up and running, however I was having problems talking
to the RTC over the I2C bus.  

After some debugging I realized that
interrupts were disabled during system calls because the BIP was set.  
I compared the original system call hander in entry_mmu.S to the lastest
and saw that the newer code used a "rtid r12,0" to make the system
call instead of the previous "rtbd r12,0" 

I changed it back to "rtbd r12,0"
which clears the BIP during the system call and the RTC now works.  

SO , should this change be made in the
developement tree or is there a different fix available ?.

Nick DeGilio
Kodak -  Entertainment Imaging