openwrtv4/target/linux/generic/patches-3.18/077-14-bgmac-reset-all-4-GMAC-cores-on-init.patch
Felix Fietkau 5c9c670616 kernel: update bgmac patches to the latest version submitted
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 45431
2015-04-14 12:17:20 +00:00

28 lines
841 B
Diff

From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 13 Apr 2015 15:56:26 +0200
Subject: [PATCH] bgmac: reset all 4 GMAC cores on init
On a BCM4709 based device, I found that GMAC cores may be enabled at
probe time, but only become usable after a full reset.
Disable cores before re-enabling them to ensure that they are properly
reset.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1623,8 +1623,11 @@ static int bgmac_probe(struct bcma_devic
ns_core = bcma_find_core_unit(core->bus,
BCMA_CORE_MAC_GBIT,
ns_gmac);
- if (ns_core && !bcma_core_is_enabled(ns_core))
- bcma_core_enable(ns_core, 0);
+ if (!ns_core)
+ continue;
+
+ bcma_core_disable(ns_core, 0);
+ bcma_core_enable(ns_core, 0);
}
}