Re: [U-Boot] [PATCH 2/2] pci: Change the first CFG read to Vendor ID in enumeration

On Mon, Oct 8, 2018 at 4:36 PM Zhiqiang Hou Zhiqiang.Hou@nxp.com wrote:

From: Hou Zhiqiang Zhiqiang.Hou@nxp.com

As the PCIe specification recommend reading the Vendor ID register to determine if a Function is present, read the Vendor ID of a non-existent Function must not result in system error, so we'd better make the first CFG read to Vendor ID instead of Header Type register in the PCIe enumeration.

Signed-off-by: Hou Zhiqiang Zhiqiang.Hou@nxp.com

drivers/pci/pci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

Simon, do we need fix the non-DM version or adding new "capability" to the non-DM drivers? I guess the answer is no and we should set some deadline for PCI DM conversion too?

Regards, Bin