mac80211: ath9k: make of_get_mac_address probe defer aware

Signed-off-by: Petr Štetiar <ynezz@true.cz>

diff --git a/package/kernel/mac80211/patches/ath/600-ath9k-make-of_get_mac_address-probe-defer-a.patch b/package/kernel/mac80211/patches/ath/600-ath9k-make-of_get_mac_address-probe-defer-a.patch
new file mode 100644 (file)
index 0000000..8cd10c8
--- /dev/null
+++ b/package/kernel/mac80211/patches/ath/600-ath9k-make-of_get_mac_address-probe-defer-a.patch
@@ -0,0 +1,37 @@
+From c6b5bedaff1d9ea2483fa9e9ff7cde34e99b1dae Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
+Date: Tue, 30 Apr 2019 11:08:09 +0200
+Subject: [PATCH] wireless: ath9k: make of_get_mac_address probe defer
+ aware
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+of_get_mac_address now uses NVMEM under the hood, so it could now return
+EPROBE_DEFER and it needs to be handled, which means, that it needs to
+be propagated back to the device driver subsystem in order to be handled
+as designed.
+
+Signed-off-by: Petr Štetiar <ynezz@true.cz>
+---
+ drivers/net/wireless/ath/ath9k/init.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
+index 98141b6..c0da4af 100644
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -642,7 +642,9 @@ static int ath9k_of_init(struct ath_softc *sc)
+       }
+ 
+       mac = of_get_mac_address(np);
+-      if (mac)
++      if (PTR_ERR(mac) == -EPROBE_DEFER)
++              return -EPROBE_DEFER;
++      else if (!IS_ERR_OR_NULL(mac))
+               ether_addr_copy(common->macaddr, mac);
+ 
+       return 0;
+-- 
+1.9.1
+