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Message-ID: <bcf7817f-43b0-ec45-fbfa-b3459dc67859@pp.inet.fi>
Date: Mon, 13 Apr 2020 17:44:59 +0300
From: Lauri Jakku <lauri.jakku@...inet.fi>
To: Leon Romanovsky <leon@...nel.org>
Cc: netdev@...r.kernel.org, Heiner Kallweit <hkallweit1@...il.com>,
nic_swsd@...ltek.com
Subject: Re: NET: r8168/r8169 identifying fix
Hi,
On 13.4.2020 15.18, Leon Romanovsky wrote:
> On Mon, Apr 13, 2020 at 03:01:23PM +0300, Lauri Jakku wrote:
>> Hi,
>>
>> I've tought that the debug's are worth to save behind an definition/commented out, so they can be enabled if needed.
>>
>
> Please stop to do top-posting.
I did not realise, sorry. Trying to do better.
>
>>
>> Latest version:
>>
>> From 1a75f6f9065a58180de1fa3c48fd80418af6c347 Mon Sep 17 00:00:00 2001
>> From: Lauri Jakku <lja@....fi>
>> Date: Mon, 13 Apr 2020 13:18:35 +0300
>> Subject: [PATCH] NET: r8168/r8169 identifying fix
>>
>> The driver installation determination made properly by
>> checking PHY vs DRIVER id's.
>> ---
>> drivers/net/ethernet/realtek/r8169_main.c | 114 ++++++++++++++++++++--
>> drivers/net/phy/mdio_bus.c | 15 ++-
>> 2 files changed, 119 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
>> index bf5bf05970a2..5e992f285527 100644
>> --- a/drivers/net/ethernet/realtek/r8169_main.c
>> +++ b/drivers/net/ethernet/realtek/r8169_main.c
>> @@ -61,6 +61,11 @@
>> #define R8169_MSG_DEFAULT \
>> (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
>>
>> +
>> +/*
>> +#define R8169_PROBE_DEBUG
>> +*/
>
> Of course not, it is even worse than before.
> If user recompiles module, he will add prints.
>
> Thanks
>
New patch at the end and in attachments.
>> +
>> /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
>> The RTL chips use a 64 element hash table based on the Ethernet CRC. */
>> #define MC_FILTER_LIMIT 32
>> @@ -5149,6 +5154,9 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
>> {
>> struct pci_dev *pdev = tp->pci_dev;
>> struct mii_bus *new_bus;
>> + u32 phydev_id = 0;
>> + u32 phydrv_id = 0;
>> + u32 phydrv_id_mask = 0;
>> int ret;
>>
>> new_bus = devm_mdiobus_alloc(&pdev->dev);
>> @@ -5165,20 +5173,69 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
>> new_bus->write = r8169_mdio_write_reg;
>>
>> ret = mdiobus_register(new_bus);
>> +
>> +#ifdef R8169_PROBE_DEBUG
>> + dev_info(&pdev->dev,
>> + "mdiobus_register: %s, %d\n",
>> + new_bus->id, ret);
>> +#endif
>> if (ret)
>> return ret;
>>
>> tp->phydev = mdiobus_get_phy(new_bus, 0);
>> +
>> if (!tp->phydev) {
>> mdiobus_unregister(new_bus);
>> return -ENODEV;
>> - } else if (!tp->phydev->drv) {
>> - /* Most chip versions fail with the genphy driver.
>> - * Therefore ensure that the dedicated PHY driver is loaded.
>> - */
>> - dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
>> - mdiobus_unregister(new_bus);
>> - return -EUNATCH;
>> + } else {
>> + /* tp -> phydev ok */
>> + int everything_OK = 0;
>> +
>> + /* Check driver id versus phy */
>> +
>> + if (tp->phydev->drv) {
>> + u32 phydev_masked = 0xBEEFDEAD;
>> + u32 drv_masked = ~0;
>> + u32 phydev_match = ~0;
>> + u32 drv_match = 0xDEADBEEF;
>> +
>> + phydev_id = tp->phydev->phy_id;
>> + phydrv_id = tp->phydev->drv->phy_id;
>> + phydrv_id_mask = tp->phydev->drv->phy_id_mask;
>> +
>> + drv_masked = phydrv_id & phydrv_id_mask;
>> + phydev_masked = phydev_id & phydrv_id_mask;
>> +
>> +#ifdef R8169_PROBE_DEBUG
>> + dev_debug(&pdev->dev,
>> + "%s: ID Check: (%x -> %x), drv (%x -> %x)\n",
>> + new_bus->id, phydev_id, phydev_masked,
>> + phydrv_id, drv_masked);
>> +#endif
>> +
>> + phydev_match = phydev_masked & drv_masked;
>> + phydev_match = phydev_match == phydev_masked;
>> +
>> + drv_match = phydev_masked & drv_masked;
>> + drv_match = drv_match == drv_masked;
>> +
>> +#ifdef R8169_PROBE_DEBUG
>> + dev_debug(&pdev->dev, "%s: ID Check: %x == %x\n",
>> + new_bus->id, phydev_match, drv_match);
>> +#endif
>> +
>> + everything_OK = (phydev_match == drv_match);
>> + }
>> +
>> + if (!everything_OK) {
>> + /* Most chip versions fail with the genphy driver.
>> + * Therefore ensure that the dedicated PHY driver
>> + * is loaded.
>> + */
>> + dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
>> + mdiobus_unregister(new_bus);
>> + return -EUNATCH;
>> + }
>> }
>>
>> /* PHY will be woken up in rtl_open() */
>> @@ -5435,6 +5492,10 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>> u64_stats_init(&tp->rx_stats.syncp);
>> u64_stats_init(&tp->tx_stats.syncp);
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: MAC\n");
>> +#endif
>> +
>> rtl_init_mac_address(tp);
>>
>> dev->ethtool_ops = &rtl8169_ethtool_ops;
>> @@ -5483,29 +5544,64 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>> dev->hw_features |= NETIF_F_RXFCS;
>>
>> jumbo_max = rtl_jumbo_max(tp);
>> +
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: jumbo max: %d\n", jumbo_max);
>> +#endif
>> +
>> if (jumbo_max)
>> dev->max_mtu = jumbo_max;
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: irq mask\n");
>> +#endif
>> +
>> rtl_set_irq_mask(tp);
>>
>> tp->fw_name = rtl_chip_infos[chipset].fw_name;
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: FW name: %s\n", tp->fw_name);
>> +#endif
>> +
>> tp->counters = dmam_alloc_coherent (&pdev->dev, sizeof(*tp->counters),
>> &tp->counters_phys_addr,
>> GFP_KERNEL);
>> if (!tp->counters)
>> return -ENOMEM;
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: set driver data\n");
>> +#endif
>> +
>> pci_set_drvdata(pdev, dev);
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: register mdio\n");
>> +#endif
>> +
>> rc = r8169_mdio_register(tp);
>> +
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: mdio register: %d\n", rc);
>> +#endif
>> +
>> if (rc)
>> return rc;
>>
>> /* chip gets powered up in rtl_open() */
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: pll pwr down\n");
>> +#endif
>> +
>> rtl_pll_power_down(tp);
>>
>> rc = register_netdev(dev);
>> +
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: netdev register: %d\n", rc);
>> +#endif
>> +
>> if (rc)
>> goto err_mdio_unregister;
>>
>> @@ -5525,6 +5621,10 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>> if (pci_dev_run_wake(pdev))
>> pm_runtime_put_sync(&pdev->dev);
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: ALL DONE!\n");
>> +#endif
>> +
>> return 0;
>>
>> err_mdio_unregister:
>> diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
>> index 522760c8bca6..41777f379a57 100644
>> --- a/drivers/net/phy/mdio_bus.c
>> +++ b/drivers/net/phy/mdio_bus.c
>> @@ -112,14 +112,22 @@ EXPORT_SYMBOL(mdiobus_unregister_device);
>> struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr)
>> {
>> struct mdio_device *mdiodev = bus->mdio_map[addr];
>> -
>> + struct phy_device *rv = NULL;
>> +/*
>> + pr_debug("mii_bus %s addr %d, %p\n", bus->id, addr, mdiodev);
>> +*/
>> if (!mdiodev)
>> return NULL;
>>
>> if (!(mdiodev->flags & MDIO_DEVICE_FLAG_PHY))
>> return NULL;
>>
>> - return container_of(mdiodev, struct phy_device, mdio);
>> + rv = container_of(mdiodev, struct phy_device, mdio);
>> +/*
>> + pr_debug("mii_bus OK? %s addr %d, %p -> %p\n",
>> + bus->id, addr, mdiodev, rv);
>> +*/
>> + return rv;
>> }
>> EXPORT_SYMBOL(mdiobus_get_phy);
>>
>> @@ -645,10 +653,11 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
>> mdiobus_setup_mdiodev_from_board_info(bus, mdiobus_create_device);
>>
>> bus->state = MDIOBUS_REGISTERED;
>> - pr_info("%s: probed\n", bus->name);
>> + pr_info("%s: probed (mdiobus_register)\n", bus->name);
>> return 0;
>>
>> error:
>> + pr_err("%s: Error while in mdiobus_register: %d\n", bus->name, err);
>> while (--i >= 0) {
>> mdiodev = bus->mdio_map[i];
>> if (!mdiodev)
>> --
>> 2.26.0
>>
>>
>>
>>
>> On 2020-04-13 14:34, Leon Romanovsky wrote:
>>> On Mon, Apr 13, 2020 at 02:02:01PM +0300, Lauri Jakku wrote:
>>>> Hi,
>>>>
>>>> Comments inline.
>>>>
>>>> On 2020-04-13 13:58, Leon Romanovsky wrote:
>>>>> On Mon, Apr 13, 2020 at 01:30:13PM +0300, Lauri Jakku wrote:
>>>>>> From 2d41edd4e6455187094f3a13d58c46eeee35aa31 Mon Sep 17 00:00:00 2001
>>>>>> From: Lauri Jakku <lja@....fi>
>>>>>> Date: Mon, 13 Apr 2020 13:18:35 +0300
>>>>>> Subject: [PATCH] NET: r8168/r8169 identifying fix
>>>>>>
>>>>>> The driver installation determination made properly by
>>>>>> checking PHY vs DRIVER id's.
>>>>>> ---
>>>>>> drivers/net/ethernet/realtek/r8169_main.c | 70 ++++++++++++++++++++---
>>>>>> drivers/net/phy/mdio_bus.c | 11 +++-
>>>>>> 2 files changed, 72 insertions(+), 9 deletions(-)
>>>>>
>>>>> I would say that most of the code is debug prints.
>>>>>
>>>>
>>>> I tought that they are helpful to keep, they are using the debug calls, so
>>>> they are not visible if user does not like those.
>>>
>>> You are missing the point of who are your users.
>>>
>>> Users want to have working device and the code. They don't need or like
>>> to debug their kernel.
>>>
>>> Thanks
>>>
>>
>> --
>> Br,
>> Lauri J.
>
>> From 1a75f6f9065a58180de1fa3c48fd80418af6c347 Mon Sep 17 00:00:00 2001
>> From: Lauri Jakku <lja@....fi>
>> Date: Mon, 13 Apr 2020 13:18:35 +0300
>> Subject: [PATCH] NET: r8168/r8169 identifying fix
>>
>> The driver installation determination made properly by
>> checking PHY vs DRIVER id's.
>> ---
>> drivers/net/ethernet/realtek/r8169_main.c | 114 ++++++++++++++++++++--
>> drivers/net/phy/mdio_bus.c | 15 ++-
>> 2 files changed, 119 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
>> index bf5bf05970a2..5e992f285527 100644
>> --- a/drivers/net/ethernet/realtek/r8169_main.c
>> +++ b/drivers/net/ethernet/realtek/r8169_main.c
>> @@ -61,6 +61,11 @@
>> #define R8169_MSG_DEFAULT \
>> (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
>>
>> +
>> +/*
>> +#define R8169_PROBE_DEBUG
>> +*/
>> +
>> /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
>> The RTL chips use a 64 element hash table based on the Ethernet CRC. */
>> #define MC_FILTER_LIMIT 32
>> @@ -5149,6 +5154,9 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
>> {
>> struct pci_dev *pdev = tp->pci_dev;
>> struct mii_bus *new_bus;
>> + u32 phydev_id = 0;
>> + u32 phydrv_id = 0;
>> + u32 phydrv_id_mask = 0;
>> int ret;
>>
>> new_bus = devm_mdiobus_alloc(&pdev->dev);
>> @@ -5165,20 +5173,69 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
>> new_bus->write = r8169_mdio_write_reg;
>>
>> ret = mdiobus_register(new_bus);
>> +
>> +#ifdef R8169_PROBE_DEBUG
>> + dev_info(&pdev->dev,
>> + "mdiobus_register: %s, %d\n",
>> + new_bus->id, ret);
>> +#endif
>> if (ret)
>> return ret;
>>
>> tp->phydev = mdiobus_get_phy(new_bus, 0);
>> +
>> if (!tp->phydev) {
>> mdiobus_unregister(new_bus);
>> return -ENODEV;
>> - } else if (!tp->phydev->drv) {
>> - /* Most chip versions fail with the genphy driver.
>> - * Therefore ensure that the dedicated PHY driver is loaded.
>> - */
>> - dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
>> - mdiobus_unregister(new_bus);
>> - return -EUNATCH;
>> + } else {
>> + /* tp -> phydev ok */
>> + int everything_OK = 0;
>> +
>> + /* Check driver id versus phy */
>> +
>> + if (tp->phydev->drv) {
>> + u32 phydev_masked = 0xBEEFDEAD;
>> + u32 drv_masked = ~0;
>> + u32 phydev_match = ~0;
>> + u32 drv_match = 0xDEADBEEF;
>> +
>> + phydev_id = tp->phydev->phy_id;
>> + phydrv_id = tp->phydev->drv->phy_id;
>> + phydrv_id_mask = tp->phydev->drv->phy_id_mask;
>> +
>> + drv_masked = phydrv_id & phydrv_id_mask;
>> + phydev_masked = phydev_id & phydrv_id_mask;
>> +
>> +#ifdef R8169_PROBE_DEBUG
>> + dev_debug(&pdev->dev,
>> + "%s: ID Check: (%x -> %x), drv (%x -> %x)\n",
>> + new_bus->id, phydev_id, phydev_masked,
>> + phydrv_id, drv_masked);
>> +#endif
>> +
>> + phydev_match = phydev_masked & drv_masked;
>> + phydev_match = phydev_match == phydev_masked;
>> +
>> + drv_match = phydev_masked & drv_masked;
>> + drv_match = drv_match == drv_masked;
>> +
>> +#ifdef R8169_PROBE_DEBUG
>> + dev_debug(&pdev->dev, "%s: ID Check: %x == %x\n",
>> + new_bus->id, phydev_match, drv_match);
>> +#endif
>> +
>> + everything_OK = (phydev_match == drv_match);
>> + }
>> +
>> + if (!everything_OK) {
>> + /* Most chip versions fail with the genphy driver.
>> + * Therefore ensure that the dedicated PHY driver
>> + * is loaded.
>> + */
>> + dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
>> + mdiobus_unregister(new_bus);
>> + return -EUNATCH;
>> + }
>> }
>>
>> /* PHY will be woken up in rtl_open() */
>> @@ -5435,6 +5492,10 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>> u64_stats_init(&tp->rx_stats.syncp);
>> u64_stats_init(&tp->tx_stats.syncp);
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: MAC\n");
>> +#endif
>> +
>> rtl_init_mac_address(tp);
>>
>> dev->ethtool_ops = &rtl8169_ethtool_ops;
>> @@ -5483,29 +5544,64 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>> dev->hw_features |= NETIF_F_RXFCS;
>>
>> jumbo_max = rtl_jumbo_max(tp);
>> +
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: jumbo max: %d\n", jumbo_max);
>> +#endif
>> +
>> if (jumbo_max)
>> dev->max_mtu = jumbo_max;
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: irq mask\n");
>> +#endif
>> +
>> rtl_set_irq_mask(tp);
>>
>> tp->fw_name = rtl_chip_infos[chipset].fw_name;
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: FW name: %s\n", tp->fw_name);
>> +#endif
>> +
>> tp->counters = dmam_alloc_coherent (&pdev->dev, sizeof(*tp->counters),
>> &tp->counters_phys_addr,
>> GFP_KERNEL);
>> if (!tp->counters)
>> return -ENOMEM;
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: set driver data\n");
>> +#endif
>> +
>> pci_set_drvdata(pdev, dev);
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: register mdio\n");
>> +#endif
>> +
>> rc = r8169_mdio_register(tp);
>> +
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: mdio register: %d\n", rc);
>> +#endif
>> +
>> if (rc)
>> return rc;
>>
>> /* chip gets powered up in rtl_open() */
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: pll pwr down\n");
>> +#endif
>> +
>> rtl_pll_power_down(tp);
>>
>> rc = register_netdev(dev);
>> +
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: netdev register: %d\n", rc);
>> +#endif
>> +
>> if (rc)
>> goto err_mdio_unregister;
>>
>> @@ -5525,6 +5621,10 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>> if (pci_dev_run_wake(pdev))
>> pm_runtime_put_sync(&pdev->dev);
>>
>> +#ifdef R816X_PROBE_DEBUG
>> + dev_dbg(&pdev->dev, "init: ALL DONE!\n");
>> +#endif
>> +
>> return 0;
>>
>> err_mdio_unregister:
>> diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
>> index 522760c8bca6..41777f379a57 100644
>> --- a/drivers/net/phy/mdio_bus.c
>> +++ b/drivers/net/phy/mdio_bus.c
>> @@ -112,14 +112,22 @@ EXPORT_SYMBOL(mdiobus_unregister_device);
>> struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr)
>> {
>> struct mdio_device *mdiodev = bus->mdio_map[addr];
>> -
>> + struct phy_device *rv = NULL;
>> +/*
>> + pr_debug("mii_bus %s addr %d, %p\n", bus->id, addr, mdiodev);
>> +*/
>> if (!mdiodev)
>> return NULL;
>>
>> if (!(mdiodev->flags & MDIO_DEVICE_FLAG_PHY))
>> return NULL;
>>
>> - return container_of(mdiodev, struct phy_device, mdio);
>> + rv = container_of(mdiodev, struct phy_device, mdio);
>> +/*
>> + pr_debug("mii_bus OK? %s addr %d, %p -> %p\n",
>> + bus->id, addr, mdiodev, rv);
>> +*/
>> + return rv;
>> }
>> EXPORT_SYMBOL(mdiobus_get_phy);
>>
>> @@ -645,10 +653,11 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
>> mdiobus_setup_mdiodev_from_board_info(bus, mdiobus_create_device);
>>
>> bus->state = MDIOBUS_REGISTERED;
>> - pr_info("%s: probed\n", bus->name);
>> + pr_info("%s: probed (mdiobus_register)\n", bus->name);
>> return 0;
>>
>> error:
>> + pr_err("%s: Error while in mdiobus_register: %d\n", bus->name, err);
>> while (--i >= 0) {
>> mdiodev = bus->mdio_map[i];
>> if (!mdiodev)
>> --
>> 2.26.0
>>
>
>From 85766c0ab77750faa4488ca7018784e3e8e9eba0 Mon Sep 17 00:00:00 2001
From: Lauri Jakku <lja@....fi>
Date: Mon, 13 Apr 2020 13:18:35 +0300
Subject: [PATCH] NET: r8168/r8169 identifying fix
The driver installation determination made properly by
checking PHY vs DRIVER id's.
---
drivers/net/ethernet/realtek/r8169_main.c | 47 +++++++++++++++++++----
1 file changed, 40 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index bf5bf05970a2..da08b1b1047c 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -5149,6 +5149,9 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
{
struct pci_dev *pdev = tp->pci_dev;
struct mii_bus *new_bus;
+ u32 phydev_id = 0;
+ u32 phydrv_id = 0;
+ u32 phydrv_id_mask = 0;
int ret;
new_bus = devm_mdiobus_alloc(&pdev->dev);
@@ -5172,13 +5175,43 @@ static int r8169_mdio_register(struct rtl8169_private *tp)
if (!tp->phydev) {
mdiobus_unregister(new_bus);
return -ENODEV;
- } else if (!tp->phydev->drv) {
- /* Most chip versions fail with the genphy driver.
- * Therefore ensure that the dedicated PHY driver is loaded.
- */
- dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
- mdiobus_unregister(new_bus);
- return -EUNATCH;
+ } else {
+ /* tp -> phydev ok */
+ int everything_OK = 0;
+
+ /* Check driver id versus phy */
+
+ if (tp->phydev->drv) {
+ u32 phydev_masked = 0xBEEFDEAD;
+ u32 drv_masked = ~0;
+ u32 phydev_match = ~0;
+ u32 drv_match = 0xDEADBEEF;
+
+ phydev_id = tp->phydev->phy_id;
+ phydrv_id = tp->phydev->drv->phy_id;
+ phydrv_id_mask = tp->phydev->drv->phy_id_mask;
+
+ drv_masked = phydrv_id & phydrv_id_mask;
+ phydev_masked = phydev_id & phydrv_id_mask;
+
+ phydev_match = phydev_masked & drv_masked;
+ phydev_match = phydev_match == phydev_masked;
+
+ drv_match = phydev_masked & drv_masked;
+ drv_match = drv_match == drv_masked;
+
+ everything_OK = (phydev_match == drv_match);
+ }
+
+ if (!everything_OK) {
+ /* Most chip versions fail with the genphy driver.
+ * Therefore ensure that the dedicated PHY driver
+ * is loaded.
+ */
+ dev_err(&pdev->dev, "realtek.ko not loaded, maybe it needs to be added to initramfs?\n");
+ mdiobus_unregister(new_bus);
+ return -EUNATCH;
+ }
}
/* PHY will be woken up in rtl_open() */
--
2.26.0
--
Br,
Lauri J.
View attachment "NET-r8169-module-enchansments.patch" of type "text/x-patch" (2462 bytes)
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