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

sh_eth: fix SH7757 GEther initialization

to the 4.9-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: sh_eth-fix-sh7757-gether-initialization.patch and it can be found in the queue-4.9 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 Sat Jan 13 10:51:19 CET 2018

From: Sergei Shtylyov sergei.shtylyov@cogentembedded.com Date: Thu, 4 Jan 2018 21:06:49 +0300 Subject: sh_eth: fix SH7757 GEther initialization

From: Sergei Shtylyov sergei.shtylyov@cogentembedded.com

[ Upstream commit 5133550296d43236439494aa955bfb765a89f615 ]

Renesas SH7757 has 2 Fast and 2 Gigabit Ether controllers, while the 'sh_eth' driver can only reset and initialize TSU of the first controller pair. Shimoda-san tried to solve that adding the 'needs_init' member to the 'struct sh_eth_plat_data', however the platform code still never sets this flag. I think that we can infer this information from the 'devno' variable (set to 'platform_device::id') and reset/init the Ether controller pair only for an even 'devno'; therefore 'sh_eth_plat_data::needs_init' can be removed...

Fixes: 150647fb2c31 ("net: sh_eth: change the condition of initialization") Signed-off-by: Sergei Shtylyov sergei.shtylyov@cogentembedded.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/renesas/sh_eth.c | 4 ++-- include/linux/sh_eth.h | 1 - 2 files changed, 2 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -3116,8 +3116,8 @@ static int sh_eth_drv_probe(struct platf ndev->features = NETIF_F_HW_VLAN_CTAG_FILTER; }

- /* initialize first or needed device */ - if (!devno || pd->needs_init) { + /* Need to init only the first port of the two sharing a TSU */ + if (devno % 2 == 0) { if (mdp->cd->chip_reset) mdp->cd->chip_reset(ndev);

--- a/include/linux/sh_eth.h +++ b/include/linux/sh_eth.h @@ -16,7 +16,6 @@ struct sh_eth_plat_data { unsigned char mac_addr[ETH_ALEN]; unsigned no_ether_link:1; unsigned ether_link_active_low:1; - unsigned needs_init:1; };

#endif

Patches currently in stable-queue which might be from sergei.shtylyov@cogentembedded.com are

queue-4.9/sh_eth-fix-sh7757-gether-initialization.patch queue-4.9/sh_eth-fix-tsu-resource-handling.patch