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Max Plekh
81919eb7e4
Since the MAC lookup started returning -EPROBE_DEFER, a probe that
defers while its nvmem provider (e.g. a mac-base cell in the CFE
partition) isn't ready yet leaves the power domain devices attached
by genpd_dev_pm_attach_by_id() behind. The next probe then fails to
re-create them:
sysfs: cannot create duplicate filename '/devices/genpd:0:1000d800.ethernet'
bcm6368-enetsw 1000d800.ethernet: error getting pm 0
bcm6368-enetsw 1000d800.ethernet: probe with driver bcm6368-enetsw failed with error -22
leaving the board without ethernet and the DSA switch deferred forever.
Look up the MAC first, before anything that isn't device-managed has
been set up, so a deferred probe can simply be retried.
Seen on a BCM6328 (BeWAN A2100N) with kernel 6.18.
Fixes: ed545519ee ("bmips: enet: handle EPROBE_DEFER for the MAC address")
Signed-off-by: Max Plekh <mplekh@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/25454
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>