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mac80211: work around a race condition on detecting a phy while bringing it up

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When reloading modules and running wifi, a phy can sometimes be renamed
while in the middle of a hotplug call that tries to detect new phys
This can lead to bogus wifi-device sections being created

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2022-12-16 11:37:30 +01:00
parent 92acd9f3e8
commit 133a1e2f37
1 changed files with 4 additions and 0 deletions
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4
package/kernel/mac80211/files/lib/wifi/mac80211.sh
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@ -167,6 +167,10 @@ detect_mac80211() {
path="$(iwinfo nl80211 path "$dev")" path="$(iwinfo nl80211 path "$dev")"
macaddr="$(cat /sys/class/ieee80211/${dev}/macaddress)" macaddr="$(cat /sys/class/ieee80211/${dev}/macaddress)"
# work around phy rename related race condition
[ -n "$path" -o -n "$macaddr" ] || continue
board_dev= board_dev=
fallback_board_dev= fallback_board_dev=
json_for_each_item check_board_phy wlan json_for_each_item check_board_phy wlan