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Revert "mac80211: remove ath10k delayed initialization hack" 

This reverts commit efd9dec319.

ath10k can take a long time to probe, long enough for netifd to fail to
initialize already configured wireless devices

Signed-off-by: Felix Fietkau <nbd@nbd.name>
lede-17.01
Felix Fietkau 2016-11-04 12:58:14 +01:00
parent 9f61ccd9e3
commit 6aa07b8202
1 changed files with 33 additions and 0 deletions
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33
package/kernel/mac80211/patches/921-ath10k_init_devices_synchronously.patch Normal file
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@ -0,0 +1,33 @@
From: Sven Eckelmann <sven@open-mesh.com>
Date: Tue, 18 Nov 2014 12:29:28 +0100
Subject: [PATCH] ath10k: Don't initialize devices asynchronously
OpenWrt requires all PHYs to be initialized to create the configuration files
during bootup. ath10k violates this because it delays the creation of the PHY
to a not well defined point in the future.
Forcing the work to be done immediately works around this problem but may also
delay the boot when firmware images cannot be found.
Signed-off-by: Sven Eckelmann <sven@open-mesh.com>
---
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -2220,6 +2220,16 @@ int ath10k_core_register(struct ath10k *
ar->chip_id = chip_id;
queue_work(ar->workqueue, &ar->register_work);
+ /* OpenWrt requires all PHYs to be initialized to create the
+ * configuration files during bootup. ath10k violates this
+ * because it delays the creation of the PHY to a not well defined
+ * point in the future.
+ *
+ * Forcing the work to be done immediately works around this problem
+ * but may also delay the boot when firmware images cannot be found.
+ */
+ flush_workqueue(ar->workqueue);
+
return 0;
}
EXPORT_SYMBOL(ath10k_core_register);