From: Greg Kroah-Hartman gregkh@linuxfoundation.org
From: Wong Vee Khee vee.khee.wong@intel.com
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@intel.com Signed-off-by: Voon Weifeng weifeng.voon@intel.com Co-developed-by: Ong Boon Leong boon.leong.ong@intel.com Signed-off-by: Ong Boon Leong boon.leong.ong@intel.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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)) {