This is a note to let you know that I've just added the patch titled stmmac: intel: Fixes clock registration error seen for multiple interfaces to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: stmmac-intel-fixes-clock-registration-error-seen-for-multiple-interfaces.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 8eb37ab7cc045ec6305a6a1a9c32374695a1a977 Mon Sep 17 00:00:00 2001 From: Wong Vee Khee <vee.khee.wong@xxxxxxxxx> Date: Fri, 5 Mar 2021 14:03:42 +0800 Subject: stmmac: intel: Fixes clock registration error seen for multiple interfaces From: Wong Vee Khee <vee.khee.wong@xxxxxxxxx> commit 8eb37ab7cc045ec6305a6a1a9c32374695a1a977 upstream. Issue seen when enumerating multiple Intel mGbE interfaces in EHL. [ 6.898141] intel-eth-pci 0000:00:1d.2: enabling device (0000 -> 0002) [ 6.900971] intel-eth-pci 0000:00:1d.2: Fail to register stmmac-clk [ 6.906434] intel-eth-pci 0000:00:1d.2: User ID: 0x51, Synopsys ID: 0x52 We fix it by making the clock name to be unique following the format of stmmac-pci_name(pci_dev) so that we can differentiate the clock for these Intel mGbE interfaces in EHL platform as follow: /sys/kernel/debug/clk/stmmac-0000:00:1d.1 /sys/kernel/debug/clk/stmmac-0000:00:1d.2 /sys/kernel/debug/clk/stmmac-0000:00:1e.4 Fixes: 58da0cfa6cf1 ("net: stmmac: create dwmac-intel.c to contain all Intel platform") Signed-off-by: Wong Vee Khee <vee.khee.wong@xxxxxxxxx> Signed-off-by: Voon Weifeng <weifeng.voon@xxxxxxxxx> Co-developed-by: Ong Boon Leong <boon.leong.ong@xxxxxxxxx> Signed-off-by: Ong Boon Leong <boon.leong.ong@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c @@ -233,6 +233,7 @@ static void common_default_data(struct p static int intel_mgbe_common_data(struct pci_dev *pdev, struct plat_stmmacenet_data *plat) { + char clk_name[20]; int ret; int i; @@ -300,8 +301,10 @@ static int intel_mgbe_common_data(struct plat->eee_usecs_rate = plat->clk_ptp_rate; /* Set system clock */ + sprintf(clk_name, "%s-%s", "stmmac", pci_name(pdev)); + plat->stmmac_clk = clk_register_fixed_rate(&pdev->dev, - "stmmac-clk", NULL, 0, + clk_name, NULL, 0, plat->clk_ptp_rate); if (IS_ERR(plat->stmmac_clk)) { Patches currently in stable-queue which might be from vee.khee.wong@xxxxxxxxx are queue-5.10/stmmac-intel-fixes-clock-registration-error-seen-for-multiple-interfaces.patch