On 10/22/19 1:57 AM, Zhi Chen wrote:
This reverts commit 76d164f582150fd0259ec0fcbc485470bcd8033e. PCIe hung issue was observed on multiple platforms. The issue was reproduced when DUT was configured as AP and associated with 50+ STAs. With PCIe protocol analyzer, we can see DMA Read crossing 4KB boundary when issue happened. It broke PCIe spec and caused PCIe stuck.
How can you say value 0 (I believe it's 64 bytes) DMA burst size causes the symptom and 1 fixes it?
Peter
