Hi, After implementing driver for PCIe RC controller of a SOC, I came across peculiarity while testing SIL3132 directly connected to the root port. My RC IP is configured for maximum of 256bytes of payload size. The sata_sil24 driver unconditionally sets pcie_set_readrq(pdev, 4096) for the endpoint which apparently works for 'every' other host irrespective of their capacity. In my case it works only if I change to pcie_set_readrq(pdev, 256) Shouldn't the Linux PCI have provision to allow max_read/payload_size not higher than the least of max capacities of all agents in the chain ? I see similar use of pcie_set_readrq(pdev, 4096), so could be I am missing something ? Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
