Re: [U-Boot] [PATCH 1/2] dm/pci: Change the first CFG read to Vendor ID in enumeration

8 Oct 2018


      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-uclass.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)
Reviewed-by: Bin Meng bmeng.cn@gmail.com