PCIE device errors after linux kernel upgrade
lravich at gmail.com
Wed Jan 8 19:24:59 EST 2014
Finally I found the problem causing the sudden system reset :
our setup :
P2020<====>PCI Bridge <=====> FPGA
The reset occurs when we allocating skb and giving the Fpga dma addr of
skb->data of this skb and when the FPGA tries to reach this address we are
having a hardware reset.
To fixed it we used GFP_DMA flag on skb allocations.
If you can explain me few thinks I will be more then happy :
1) how come we managed to work in 2.6.32 kernel without this flag.
2) Ok gave you a bad dma address why reset the system without any warning.
Thanks for your time and support
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