Re: [PATCH net-next] net: phy: Cleanup struct mdio_driver_common

From: Przemek Kitszel
Date: Thu Dec 28 2023 - 03:25:03 EST

On 12/28/23 08:23, Yajun Deng wrote:
The struct mdio_driver_common is a wrapper for driver-model structure,
it contains device_driver and flags. There are only struct phy_driver
and mdio_driver that use it. The flags is used to distinguish between
struct phy_driver and mdio_driver.

We can test that if probe of device_driver is equal to phy_probe. This
way, the struct mdio_driver_common is no longer needed, and struct
phy_driver and usb_mdio_driver will be consistent with other driver
structs.

Cleanup struct mdio_driver_common and introduce is_phy_driver(). Use
is_phy_driver() test that if the driver is a phy or not.

Signed-off-by: Yajun Deng <yajun.deng@xxxxxxxxx>
---
drivers/net/dsa/b53/b53_mdio.c | 2 +-
drivers/net/dsa/dsa_loop.c | 2 +-
drivers/net/dsa/lan9303_mdio.c | 2 +-
drivers/net/dsa/microchip/ksz8863_smi.c | 2 +-
drivers/net/dsa/mt7530-mdio.c | 2 +-
drivers/net/dsa/mv88e6060.c | 2 +-
drivers/net/dsa/mv88e6xxx/chip.c | 2 +-
drivers/net/dsa/qca/ar9331.c | 2 +-
drivers/net/dsa/qca/qca8k-8xxx.c | 2 +-
drivers/net/dsa/realtek/realtek-mdio.c | 2 +-
drivers/net/dsa/xrs700x/xrs700x_mdio.c | 2 +-
drivers/net/phy/mdio_bus.c | 2 +-
drivers/net/phy/mdio_device.c | 21 +++++++--------
drivers/net/phy/phy_device.c | 35 ++++++++++++++-----------
drivers/net/phy/xilinx_gmii2rgmii.c | 2 +-
drivers/phy/broadcom/phy-bcm-ns-usb3.c | 8 +++---
drivers/phy/broadcom/phy-bcm-ns2-pcie.c | 8 +++---
include/linux/mdio.h | 16 ++---------
include/linux/phy.h | 9 +++----
19 files changed, 54 insertions(+), 69 deletions(-)


some nitpicks from me,
otherwise looks fine:
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@xxxxxxxxx>

BTW, please send v2 after winter break:
https://patchwork.hopto.org/net-next.html


diff --git a/drivers/net/dsa/b53/b53_mdio.c b/drivers/net/dsa/b53/b53_mdio.c
index 897e5e8b3d69..1ececa4d44e4 100644
--- a/drivers/net/dsa/b53/b53_mdio.c
+++ b/drivers/net/dsa/b53/b53_mdio.c
@@ -392,7 +392,7 @@ static struct mdio_driver b53_mdio_driver = {
.probe = b53_mdio_probe,
.remove = b53_mdio_remove,
.shutdown = b53_mdio_shutdown,
- .mdiodrv.driver = {
+ .driver = {
.name = "bcm53xx",
.of_match_table = b53_of_match,
},
diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index c70ed67cc188..3f885878be3a 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -375,7 +375,7 @@ static void dsa_loop_drv_shutdown(struct mdio_device *mdiodev)
}
static struct mdio_driver dsa_loop_drv = {
- .mdiodrv.driver = {
+ .driver = {
.name = "dsa-loop",
},
.probe = dsa_loop_drv_probe,
diff --git a/drivers/net/dsa/lan9303_mdio.c b/drivers/net/dsa/lan9303_mdio.c
index 167a86f39f27..7cb7e2b1478a 100644
--- a/drivers/net/dsa/lan9303_mdio.c
+++ b/drivers/net/dsa/lan9303_mdio.c
@@ -162,7 +162,7 @@ static const struct of_device_id lan9303_mdio_of_match[] = {
MODULE_DEVICE_TABLE(of, lan9303_mdio_of_match);
static struct mdio_driver lan9303_mdio_driver = {
- .mdiodrv.driver = {
+ .driver = {
.name = "LAN9303_MDIO",
.of_match_table = lan9303_mdio_of_match,
},
diff --git a/drivers/net/dsa/microchip/ksz8863_smi.c b/drivers/net/dsa/microchip/ksz8863_smi.c
index 5711a59e2ac9..c788cadd7595 100644
--- a/drivers/net/dsa/microchip/ksz8863_smi.c
+++ b/drivers/net/dsa/microchip/ksz8863_smi.c
@@ -213,7 +213,7 @@ static struct mdio_driver ksz8863_driver = {
.probe = ksz8863_smi_probe,
.remove = ksz8863_smi_remove,
.shutdown = ksz8863_smi_shutdown,
- .mdiodrv.driver = {
+ .driver = {
.name = "ksz8863-switch",
.of_match_table = ksz8863_dt_ids,
},
diff --git a/drivers/net/dsa/mt7530-mdio.c b/drivers/net/dsa/mt7530-mdio.c
index 088533663b83..7315654a6757 100644
--- a/drivers/net/dsa/mt7530-mdio.c
+++ b/drivers/net/dsa/mt7530-mdio.c
@@ -258,7 +258,7 @@ static struct mdio_driver mt7530_mdio_driver = {
.probe = mt7530_probe,
.remove = mt7530_remove,
.shutdown = mt7530_shutdown,
- .mdiodrv.driver = {
+ .driver = {
.name = "mt7530-mdio",
.of_match_table = mt7530_of_match,
},
diff --git a/drivers/net/dsa/mv88e6060.c b/drivers/net/dsa/mv88e6060.c
index 294312b58e4f..5925f23e7ab3 100644
--- a/drivers/net/dsa/mv88e6060.c
+++ b/drivers/net/dsa/mv88e6060.c
@@ -367,7 +367,7 @@ static struct mdio_driver mv88e6060_driver = {
.probe = mv88e6060_probe,
.remove = mv88e6060_remove,
.shutdown = mv88e6060_shutdown,
- .mdiodrv.driver = {
+ .driver = {
.name = "mv88e6060",
.of_match_table = mv88e6060_of_match,
},
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 383b3c4d6f59..4f24699264d1 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -7258,7 +7258,7 @@ static struct mdio_driver mv88e6xxx_driver = {
.probe = mv88e6xxx_probe,
.remove = mv88e6xxx_remove,
.shutdown = mv88e6xxx_shutdown,
- .mdiodrv.driver = {
+ .driver = {
.name = "mv88e6085",
.of_match_table = mv88e6xxx_of_match,
.pm = &mv88e6xxx_pm_ops,
diff --git a/drivers/net/dsa/qca/ar9331.c b/drivers/net/dsa/qca/ar9331.c
index 8d9d271ac3af..da392d60c9e7 100644
--- a/drivers/net/dsa/qca/ar9331.c
+++ b/drivers/net/dsa/qca/ar9331.c
@@ -1122,7 +1122,7 @@ static struct mdio_driver ar9331_sw_mdio_driver = {
.probe = ar9331_sw_probe,
.remove = ar9331_sw_remove,
.shutdown = ar9331_sw_shutdown,
- .mdiodrv.driver = {
+ .driver = {
.name = AR9331_SW_NAME,
.of_match_table = ar9331_sw_of_match,
},
diff --git a/drivers/net/dsa/qca/qca8k-8xxx.c b/drivers/net/dsa/qca/qca8k-8xxx.c
index ec57d9d52072..fe396397f405 100644
--- a/drivers/net/dsa/qca/qca8k-8xxx.c
+++ b/drivers/net/dsa/qca/qca8k-8xxx.c
@@ -2187,7 +2187,7 @@ static struct mdio_driver qca8kmdio_driver = {
.probe = qca8k_sw_probe,
.remove = qca8k_sw_remove,
.shutdown = qca8k_sw_shutdown,
- .mdiodrv.driver = {
+ .driver = {
.name = "qca8k",
.of_match_table = qca8k_of_match,
.pm = &qca8k_pm_ops,
diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c
index 292e6d087e8b..8e6a951b391c 100644
--- a/drivers/net/dsa/realtek/realtek-mdio.c
+++ b/drivers/net/dsa/realtek/realtek-mdio.c
@@ -274,7 +274,7 @@ static const struct of_device_id realtek_mdio_of_match[] = {
MODULE_DEVICE_TABLE(of, realtek_mdio_of_match);
static struct mdio_driver realtek_mdio_driver = {
- .mdiodrv.driver = {
+ .driver = {
.name = "realtek-mdio",
.of_match_table = realtek_mdio_of_match,
},
diff --git a/drivers/net/dsa/xrs700x/xrs700x_mdio.c b/drivers/net/dsa/xrs700x/xrs700x_mdio.c
index 5f7d344b5d73..1a76d9d49f13 100644
--- a/drivers/net/dsa/xrs700x/xrs700x_mdio.c
+++ b/drivers/net/dsa/xrs700x/xrs700x_mdio.c
@@ -164,7 +164,7 @@ static const struct of_device_id __maybe_unused xrs700x_mdio_dt_ids[] = {
MODULE_DEVICE_TABLE(of, xrs700x_mdio_dt_ids);
static struct mdio_driver xrs700x_mdio_driver = {
- .mdiodrv.driver = {
+ .driver = {
.name = "xrs700x-mdio",
.of_match_table = of_match_ptr(xrs700x_mdio_dt_ids),
},
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 6cf73c15635b..a1092c641d14 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -1342,7 +1342,7 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv)
struct mdio_device *mdio = to_mdio_device(dev);
/* Both the driver and device must type-match */
- if (!(mdiodrv->mdiodrv.flags & MDIO_DEVICE_IS_PHY) !=
+ if (!(is_phy_driver(&mdiodrv->driver)) !=
!(mdio->flags & MDIO_DEVICE_FLAG_PHY))

you could remove one pair of parens, and even change condition to:
if (is_phy_driver(&mdiodrv->driver) == !(mdio->flags &
MDIO_DEVICE_FLAG_PHY))


return 0;
diff --git a/drivers/net/phy/mdio_device.c b/drivers/net/phy/mdio_device.c
index 73f6539b9e50..16232e7a1255 100644
--- a/drivers/net/phy/mdio_device.c
+++ b/drivers/net/phy/mdio_device.c
@@ -40,7 +40,7 @@ int mdio_device_bus_match(struct device *dev, struct device_driver *drv)
struct mdio_device *mdiodev = to_mdio_device(dev);
struct mdio_driver *mdiodrv = to_mdio_driver(drv);
- if (mdiodrv->mdiodrv.flags & MDIO_DEVICE_IS_PHY)
+ if (is_phy_driver(&mdiodrv->driver))
return 0;
return strcmp(mdiodev->modalias, drv->name) == 0;
@@ -203,20 +203,19 @@ static void mdio_shutdown(struct device *dev)
*/
int mdio_driver_register(struct mdio_driver *drv)
{
- struct mdio_driver_common *mdiodrv = &drv->mdiodrv;
int retval;
- pr_debug("%s: %s\n", __func__, mdiodrv->driver.name);
+ pr_debug("%s: %s\n", __func__, drv->driver.name);
- mdiodrv->driver.bus = &mdio_bus_type;
- mdiodrv->driver.probe = mdio_probe;
- mdiodrv->driver.remove = mdio_remove;
- mdiodrv->driver.shutdown = mdio_shutdown;
+ drv->driver.bus = &mdio_bus_type;
+ drv->driver.probe = mdio_probe;
+ drv->driver.remove = mdio_remove;
+ drv->driver.shutdown = mdio_shutdown;
- retval = driver_register(&mdiodrv->driver);
+ retval = driver_register(&drv->driver);
if (retval) {
pr_err("%s: Error %d in registering driver\n",
- mdiodrv->driver.name, retval);
+ drv->driver.name, retval);
return retval;
}
@@ -227,8 +226,6 @@ EXPORT_SYMBOL(mdio_driver_register);
void mdio_driver_unregister(struct mdio_driver *drv)
{
- struct mdio_driver_common *mdiodrv = &drv->mdiodrv;
-
- driver_unregister(&mdiodrv->driver);
+ driver_unregister(&drv->driver);
}
EXPORT_SYMBOL(mdio_driver_unregister);
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 3611ea64875e..55494a345bd4 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -529,7 +529,7 @@ static int phy_bus_match(struct device *dev, struct device_driver *drv)
const int num_ids = ARRAY_SIZE(phydev->c45_ids.device_ids);
int i;
- if (!(phydrv->mdiodrv.flags & MDIO_DEVICE_IS_PHY))
+ if (!(is_phy_driver(&phydrv->driver)))

here parens are redundant too

return 0;
if (phydrv->match_phy_device)
@@ -1456,9 +1456,9 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
*/
if (!d->driver) {
if (phydev->is_c45)
- d->driver = &genphy_c45_driver.mdiodrv.driver;
+ d->driver = &genphy_c45_driver.driver;
else
- d->driver = &genphy_driver.mdiodrv.driver;
+ d->driver = &genphy_driver.driver;
using_genphy = true;
}
@@ -1638,14 +1638,14 @@ static bool phy_driver_is_genphy_kind(struct phy_device *phydev,
bool phy_driver_is_genphy(struct phy_device *phydev)
{
return phy_driver_is_genphy_kind(phydev,
- &genphy_driver.mdiodrv.driver);
+ &genphy_driver.driver);
}
EXPORT_SYMBOL_GPL(phy_driver_is_genphy);
bool phy_driver_is_genphy_10g(struct phy_device *phydev)
{
return phy_driver_is_genphy_kind(phydev,
- &genphy_c45_driver.mdiodrv.driver);
+ &genphy_c45_driver.driver);

now it fits into one line (same for phy_driver_is_genphy())

}
EXPORT_SYMBOL_GPL(phy_driver_is_genphy_10g);

[snip]