[PATCH v3 1/2] net/zxdh: add pcie bar channel check

[Stephen Hemminger]

On Tue,  3 Feb 2026 15:17:28 +0800
Tianhao Zhang <zhang.tianhao2 at zte.com.cn> wrote:

> After obtaining the DTB element register, check if the PCIe link is abnormal.
> 
> Signed-off-by: Tianhao Zhang <zhang.tianhao2 at zte.com.cn>
> ---

Ok, but the commit message is too terse. How about?

Check for PCIe BAR failure after reading the DTB queue
buffer space register. A value of 0x3F in the low bits
indicates the link is down. Also return a specific error
code for DTB timeout instead of the generic ZXDH_ERR.

I can fix during merge.