target/linux/generic/patches-4.3/072-14-bgmac-reset-all-4-GMAC-cores-on-init.patch

   1 From: Felix Fietkau <nbd@openwrt.org>
   2 Date: Mon, 13 Apr 2015 15:56:26 +0200
   3 Subject: [PATCH] bgmac: reset all 4 GMAC cores on init
   4
   5 On a BCM4709 based device, I found that GMAC cores may be enabled at
   6 probe time, but only become usable after a full reset.
   7 Disable cores before re-enabling them to ensure that they are properly
   8 reset.
   9
  10 Signed-off-by: Felix Fietkau <nbd@openwrt.org>
  11 ---
  12
  13 --- a/drivers/net/ethernet/broadcom/bgmac.c
  14 +++ b/drivers/net/ethernet/broadcom/bgmac.c
  15 @@ -1641,8 +1641,11 @@ static int bgmac_probe(struct bcma_devic
  16                         ns_core = bcma_find_core_unit(core->bus,
  17                                                       BCMA_CORE_MAC_GBIT,
  18                                                       ns_gmac);
  19 -                       if (ns_core && !bcma_core_is_enabled(ns_core))
  20 -                               bcma_core_enable(ns_core, 0);
  21 +                       if (!ns_core)
  22 +                               continue;
  23 +
  24 +                       bcma_core_disable(ns_core, 0);
  25 +                       bcma_core_enable(ns_core, 0);
  26                 }
  27         }
  28