This is a note to let you know that I've just added the patch titled

net: bcmgenet: reserved phy revisions must be checked first

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: net-bcmgenet-reserved-phy-revisions-must-be-checked-first.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Mon Dec 18 14:47:43 CET 2017

From: Doug Berger opendmb@gmail.com Date: Thu, 9 Mar 2017 16:58:45 -0800 Subject: net: bcmgenet: reserved phy revisions must be checked first

From: Doug Berger opendmb@gmail.com

[ Upstream commit eca4bad73409aedc6ff22f823c18b67a4f08c851 ]

The reserved gphy_rev value of 0x01ff must be tested before the old or new scheme for GPHY major versioning are tested, otherwise it will be treated as 0xff00 according to the old scheme.

Fixes: b04a2f5b9ff5 ("net: bcmgenet: add support for new GENET PHY revision scheme") Signed-off-by: Doug Berger opendmb@gmail.com Reviewed-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -3326,6 +3326,12 @@ static void bcmgenet_set_hw_params(struc */ gphy_rev = reg & 0xffff;

+ /* This is reserved so should require special treatment */ + if (gphy_rev == 0 || gphy_rev == 0x01ff) { + pr_warn("Invalid GPHY revision detected: 0x%04x\n", gphy_rev); + return; + } + /* This is the good old scheme, just GPHY major, no minor nor patch */ if ((gphy_rev & 0xf0) != 0) priv->gphy_rev = gphy_rev << 8; @@ -3334,12 +3340,6 @@ static void bcmgenet_set_hw_params(struc else if ((gphy_rev & 0xff00) != 0) priv->gphy_rev = gphy_rev;

- /* This is reserved so should require special treatment */ - else if (gphy_rev == 0 || gphy_rev == 0x01ff) { - pr_warn("Invalid GPHY revision detected: 0x%04x\n", gphy_rev); - return; - } - #ifdef CONFIG_PHYS_ADDR_T_64BIT if (!(params->flags & GENET_HAS_40BITS)) pr_warn("GENET does not support 40-bits PA\n");

Patches currently in stable-queue which might be from opendmb@gmail.com are

queue-4.4/net-bcmgenet-correct-the-rbuf_ovfl_cnt-and-rbuf_err_cnt-mib-values.patch queue-4.4/net-bcmgenet-correct-mib-access-of-unimac-runt-counters.patch queue-4.4/net-bcmgenet-power-down-internal-phy-if-open-or-resume-fails.patch queue-4.4/net-bcmgenet-reserved-phy-revisions-must-be-checked-first.patch queue-4.4/net-bcmgenet-power-up-the-internal-phy-before-probing-the-mii.patch