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SubjectRe: [PATCH v4 2/2] net: mdio: rework mdio_uevent for mdio ethernet phy device
On Sat, Dec 04, 2021 at 05:13:28PM +0800, Yinbo Zhu wrote:
> The of_device_uevent_modalias is service for 'of' type platform driver
> , which ask the first args must be 'of' that use MODULE_DEVICE_TABLE
> when driver was exported, but ethernet phy is a kind of 'mdio' type
> device and it is inappropriate if driver use 'of' type for exporting,
> in fact, most mainstream ethernet phy driver hasn't used 'of' type,
> even though phy driver was exported use 'of' type and it's irrelevant
> with mdio_uevent, at this time, platform_uevent was responsible for
> reporting uevent to match modules.alias configure, so, whatever that
> of_device_uevent_modalias was unnecessary, this patch was to remove it
> and add phy_id as modio uevent then ethernet phy module auto load
> function will work well.
>
> Signed-off-by: Yinbo Zhu <zhuyinbo@loongson.cn>

NAK.

> ---
>
> drivers/net/phy/mdio_bus.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
> index 6865d93..999f0d4 100644
> --- a/drivers/net/phy/mdio_bus.c
> +++ b/drivers/net/phy/mdio_bus.c
> @@ -962,12 +962,12 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv)
>
> static int mdio_uevent(struct device *dev, struct kobj_uevent_env *env)
> {
> - int rc;
> + struct phy_device *pdev;
>
> - /* Some devices have extra OF data and an OF-style MODALIAS */
> - rc = of_device_uevent_modalias(dev, env);
> - if (rc != -ENODEV)
> - return rc;
> + pdev = to_phy_device(dev);
> +
> + if (add_uevent_var(env, "MODALIAS=mdio:p%08X", pdev->phy_id))
> + return -ENOMEM;
>
> return 0;
> }
> @@ -991,7 +991,7 @@ static int mdio_uevent(struct device *dev, struct kobj_uevent_env *env)
> };
>
> struct bus_type mdio_bus_type = {
> - .name = "mdio_bus",
> + .name = "mdio",
> .dev_groups = mdio_bus_dev_groups,
> .match = mdio_bus_match,
> .uevent = mdio_uevent,
> --
> 1.8.3.1
>
>

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