readb types and writeb types.

[Iqbal <iqbal@naturesoft.net>]

HI,

Could there any clue for the following 

My driver tries to access PCI memory address using the kernel api's
readb types and writeb types.

Whenever i am trying to access the memory range obtained from the PCI
subsystem, crashes my  driver.

i did the following for memory management.

1.physical_memory = pci_resource_start()
2.virtual_addreass= ioremap(phsical_memory,pci_resource_len(pdev,0));

I do  readb(virtual_addreass+PCI_REGISTER);

It crashes and hangs my system.I know some where i am accessing the out
of range memory. How do trace it.

Thanks in advance.
iqbal






 



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