xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
複製 0
程式碼 問題管理 合併請求 Actions Packages Projects 版本發佈 Wiki Activity

mdio_bus: handle only single PHY reset GPIO

瀏覽代碼 
Commit 4c5e7a2c05 ("dt-bindings: mdio: Clarify binding document")
declared that a MDIO reset GPIO property should have only a single GPIO
reference/specifier, however the supporting code was left intact, still
burdening the kernel with now apparently useless loops -- get rid of them.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sergei Shtylyov
2017-06-12 23:55:38 +03:00
committed by David S. Miller
父節點 61d3e1d9bc
當前提交 d396e84c56
共有 3 個文件被更改，包括 21 次插入 和 39 次删除
Download Patch File Download Diff File Expand all files Collapse all files

53
drivers/net/phy/mdio_bus.c
查看文件

@@ -353,33 +353,22 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
mutex_init(&bus->mdio_lock);
/* de-assert bus level PHY GPIO resets */
if (bus->num_reset_gpios > 0) {
bus->reset_gpiod = devm_kcalloc(&bus->dev,
bus->num_reset_gpios,
sizeof(struct gpio_desc *),
GFP_KERNEL);
if (!bus->reset_gpiod)
return -ENOMEM;
}
for (i = 0; i < bus->num_reset_gpios; i++) {
gpiod = devm_gpiod_get_index(&bus->dev, "reset", i,
GPIOD_OUT_LOW);
if (IS_ERR(gpiod)) {
err = PTR_ERR(gpiod);
if (err != -ENOENT) {
dev_err(&bus->dev,
"mii_bus %s couldn't get reset GPIO\n",
bus->id);
return err;
}
} else {
bus->reset_gpiod[i] = gpiod;
gpiod_set_value_cansleep(gpiod, 1);
udelay(bus->reset_delay_us);
gpiod_set_value_cansleep(gpiod, 0);
/* de-assert bus level PHY GPIO reset */
gpiod = devm_gpiod_get(&bus->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(gpiod)) {
err = PTR_ERR(gpiod);
if (err != -ENOENT) {
dev_err(&bus->dev,
"mii_bus %s couldn't get reset GPIO\n",
bus->id);
return err;
}
} else {
bus->reset_gpiod = gpiod;
gpiod_set_value_cansleep(gpiod, 1);
udelay(bus->reset_delay_us);
gpiod_set_value_cansleep(gpiod, 0);
}
if (bus->reset)
@@ -414,10 +403,8 @@ error:
}
/* Put PHYs in RESET to save power */
for (i = 0; i < bus->num_reset_gpios; i++) {
if (bus->reset_gpiod[i])
gpiod_set_value_cansleep(bus->reset_gpiod[i], 1);
}
if (bus->reset_gpiod)
gpiod_set_value_cansleep(bus->reset_gpiod, 1);
device_del(&bus->dev);
return err;
@@ -442,10 +429,8 @@ void mdiobus_unregister(struct mii_bus *bus)
}
/* Put PHYs in RESET to save power */
for (i = 0; i < bus->num_reset_gpios; i++) {
if (bus->reset_gpiod[i])
gpiod_set_value_cansleep(bus->reset_gpiod[i], 1);
}
if (bus->reset_gpiod)
gpiod_set_value_cansleep(bus->reset_gpiod, 1);
device_del(&bus->dev);
}