Commit 8eb37ab7 authored by Wong Vee Khee's avatar Wong Vee Khee Committed by David S. Miller

stmmac: intel: Fixes clock registration error seen for multiple interfaces

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: 58da0cfa ("net: stmmac: create dwmac-intel.c to contain all Intel platform")
Signed-off-by: default avatarWong Vee Khee <vee.khee.wong@intel.com>
Signed-off-by: default avatarVoon Weifeng <weifeng.voon@intel.com>
Co-developed-by: default avatarOng Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: default avatarOng Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9a7b3950
......@@ -233,6 +233,7 @@ static void common_default_data(struct plat_stmmacenet_data *plat)
static int intel_mgbe_common_data(struct pci_dev *pdev,
struct plat_stmmacenet_data *plat)
{
char clk_name[20];
int ret;
int i;
......@@ -301,8 +302,10 @@ static int intel_mgbe_common_data(struct pci_dev *pdev,
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)) {
......
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