r8152: Use BMSR to detect the link state

r8152 detects carrier from PLA_PHYSTATUS without reading BMSR, so
BMSR_LSTATUS can remain latched low after link up. Since
commit f6f2e946aa4d ("net: mii: Fix the Speed display when the network
cable is not connected"), the first speed query can then report
SPEED_UNKNOWN, which applications such as NetworkManager may cache
until the next carrier change.

Use BMSR_LSTATUS in set_carrier() so a latched link down can turn
carrier off after the link has recovered. If BMSR reports down but
PLA_PHYSTATUS reports up, reschedule the link work to read the current
state without waiting for another notification.

Tested on an RTL8153B: NetworkManager reported 1000 Mb/s after 3 of 3
rebinds, instead of an unknown speed.

Fixes: f6f2e946aa4d ("net: mii: Fix the Speed display when the network cable is not connected")
Cc: stable@vger.kernel.org
Suggested-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Reviewed-by: Hayes Wang <hayeswang@realtek.com>
Link: https://patch.msgid.link/20261026012345.1902285-1-lilinmao@kylinos.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

0 files changed, 0 insertions, 0 deletions