On Mon, 16 Nov 2020 10:18:13 +0100 Marek Szyprowski wrote:

On 16.11.2020 07:52, Hayes Wang wrote:

quoted

Avoid r8153_ecm is compiled as built-in, if r8152 driver is compiled
as modules. Otherwise, the r8153_ecm would be used, even though the
device is supported by r8152 driver.

Fixes: c1aedf015ebd ("net/usb/r8153_ecm: support ECM mode for RTL8153")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hayes Wang <redacted>  

Yes, this fixes this issue, although I would prefer a separate Kconfig 
entry for r8153_ecm with proper dependencies instead of this ifdefs in 
Makefile.

Agreed, this is what dependency resolution is for.

Let's just make this a separate Kconfig entry.