Hi everyone,

Can we have this series backported to all applicable stable kernels? +and future fixes: commit 0d4cda805a18 ("r8152: avoid to change cfg for all devices") commit 95a4c1d617b9 ("r8152: remove rtl_vendor_mode function")

RTL8156 (2.5Gbe) is supported by r8152, but wasn't blacklisted in cdc_ether.c due to having a different product ID (0x8156).

Some RTL8156 users are stuck with using the cdc_ncm driver prior to this patch series, which results in a far less ideal experience [1].

As we (finally) have a proper fix implemented thanks to Bjørn, it seems to make more than enough sense to backport this to stable kernels.

I'm personally running v6.1 with this applied.

Thanks, regards

[1] https://lore.kernel.org/netdev/CAO3ALPzKEStzf5-mgSLJ_jsCSbRq_2JzZ6de2rXuETV5...

On 1/7/23 01:07, Bjørn Mork wrote:

Some device and firmware combinations with NCM support will end up using the cdc_ncm driver by default. This is sub- optimal for the same reasons we've previously accepted the blacklist hack in cdc_ether.

The recent support for subclassing the generic USB device driver allows us to create a very slim driver with the same functionality. This patch set uses that to implement a device specific configuration default which is independent of any USB interface drivers. This means that it works equally whether the device initially ends up in NCM or ECM mode, without depending on any code in the respective class drivers.

Bjørn Mork (2): r8152: add USB device driver for config selection cdc_ether: no need to blacklist any r8152 devices

drivers/net/usb/cdc_ether.c | 114 ------------------------------------ drivers/net/usb/r8152.c | 113 +++++++++++++++++++++++++---------- 2 files changed, 81 insertions(+), 146 deletions(-)