target/linux/generic/patches-4.4/072-bgmac-reset-enable-Ethernet-core-before-using-it.patch

   1 From b4dfd8e92956b396d3438212bc9a0be6267b8b34 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Tue, 12 Apr 2016 13:30:45 +0200
   4 Subject: [PATCH] bgmac: reset & enable Ethernet core before using it
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
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   8
   9 This fixes Ethernet on D-Link DIR-885L with BCM47094 SoC. Felix reported
  10 similar fix was needed for his BCM4709 device (Buffalo WXR-1900DHP?).
  11 I tested this for regressions on BCM4706, BCM4708A0 and BCM47081A0.
  12
  13 Cc: Felix Fietkau <nbd@nbd.name>
  14 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  15 Signed-off-by: David S. Miller <davem@davemloft.net>
  16 ---
  17
  18 --- a/drivers/net/ethernet/broadcom/bgmac.c
  19 +++ b/drivers/net/ethernet/broadcom/bgmac.c
  20 @@ -1578,6 +1578,11 @@ static int bgmac_probe(struct bcma_devic
  21                 dev_warn(&core->dev, "Using random MAC: %pM\n", mac);
  22         }
  23
  24 +       /* This (reset &) enable is not preset in specs or reference driver but
  25 +        * Broadcom does it in arch PCI code when enabling fake PCI device.
  26 +        */
  27 +       bcma_core_enable(core, 0);
  28 +
  29         /* Allocation and references */
  30         net_dev = alloc_etherdev(sizeof(*bgmac));
  31         if (!net_dev)