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Date: Sat, 4 Jan 2014 04:17:39 +0300
From: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To: netdev@...r.kernel.org
Subject: [PATCH 3/6] phy: kill useless local variables
A number of functions (especially in phy.c) has local variables that were hardly
needed in the first place -- remove them.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
---
drivers/net/phy/phy.c | 55 ++++++++++++-------------------------------
drivers/net/phy/phy_device.c | 10 +------
2 files changed, 18 insertions(+), 47 deletions(-)
Index: net-next/drivers/net/phy/phy.c
===================================================================
--- net-next.orig/drivers/net/phy/phy.c
+++ net-next/drivers/net/phy/phy.c
@@ -67,12 +67,10 @@ EXPORT_SYMBOL(phy_print_status);
*/
static int phy_clear_interrupt(struct phy_device *phydev)
{
- int err = 0;
-
if (phydev->drv->ack_interrupt)
- err = phydev->drv->ack_interrupt(phydev);
+ return phydev->drv->ack_interrupt(phydev);
- return err;
+ return 0;
}
/**
@@ -84,13 +82,11 @@ static int phy_clear_interrupt(struct ph
*/
static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts)
{
- int err = 0;
-
phydev->interrupts = interrupts;
if (phydev->drv->config_intr)
- err = phydev->drv->config_intr(phydev);
+ return phydev->drv->config_intr(phydev);
- return err;
+ return 0;
}
@@ -314,7 +310,6 @@ int phy_mii_ioctl(struct phy_device *phy
{
struct mii_ioctl_data *mii_data = if_mii(ifr);
u16 val = mii_data->val_in;
- int ret = 0;
switch (cmd) {
case SIOCGMIIPHY:
@@ -324,7 +319,7 @@ int phy_mii_ioctl(struct phy_device *phy
case SIOCGMIIREG:
mii_data->val_out = mdiobus_read(phydev->bus, mii_data->phy_id,
mii_data->reg_num);
- break;
+ return 0;
case SIOCSMIIREG:
if (mii_data->phy_id == phydev->addr) {
@@ -358,8 +353,8 @@ int phy_mii_ioctl(struct phy_device *phy
if (mii_data->reg_num == MII_BMCR &&
val & BMCR_RESET)
- ret = phy_init_hw(phydev);
- break;
+ return phy_init_hw(phydev);
+ return 0;
case SIOCSHWTSTAMP:
if (phydev->drv->hwtstamp)
@@ -369,8 +364,6 @@ int phy_mii_ioctl(struct phy_device *phy
default:
return -EOPNOTSUPP;
}
-
- return ret;
}
EXPORT_SYMBOL(phy_mii_ioctl);
@@ -557,8 +550,6 @@ phy_err:
*/
int phy_start_interrupts(struct phy_device *phydev)
{
- int err = 0;
-
atomic_set(&phydev->irq_disable, 0);
if (request_irq(phydev->irq, phy_interrupt,
IRQF_SHARED,
@@ -570,9 +561,7 @@ int phy_start_interrupts(struct phy_devi
return 0;
}
- err = phy_enable_interrupts(phydev);
-
- return err;
+ return phy_enable_interrupts(phydev);
}
EXPORT_SYMBOL(phy_start_interrupts);
@@ -615,7 +604,6 @@ EXPORT_SYMBOL(phy_stop_interrupts);
*/
void phy_change(struct work_struct *work)
{
- int err;
struct phy_device *phydev =
container_of(work, struct phy_device, phy_queue);
@@ -623,9 +611,7 @@ void phy_change(struct work_struct *work
!phydev->drv->did_interrupt(phydev))
goto ignore;
- err = phy_disable_interrupts(phydev);
-
- if (err)
+ if (phy_disable_interrupts(phydev))
goto phy_err;
mutex_lock(&phydev->lock);
@@ -637,10 +623,8 @@ void phy_change(struct work_struct *work
enable_irq(phydev->irq);
/* Reenable interrupts */
- if (PHY_HALTED != phydev->state)
- err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
-
- if (err)
+ if (PHY_HALTED != phydev->state &&
+ phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED))
goto irq_enable_err;
/* reschedule state queue work to run as soon as possible */
@@ -953,14 +937,10 @@ static inline void mmd_phy_indirect(stru
static int phy_read_mmd_indirect(struct mii_bus *bus, int prtad, int devad,
int addr)
{
- u32 ret;
-
mmd_phy_indirect(bus, prtad, devad, addr);
/* Read the content of the MMD's selected register */
- ret = bus->read(bus, addr, MII_MMD_DATA);
-
- return ret;
+ return bus->read(bus, addr, MII_MMD_DATA);
}
/**
@@ -1000,8 +980,6 @@ static void phy_write_mmd_indirect(struc
*/
int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
{
- int ret = -EPROTONOSUPPORT;
-
/* According to 802.3az,the EEE is supported only in full duplex-mode.
* Also EEE feature is active when core is operating with MII, GMII
* or RGMII.
@@ -1027,7 +1005,7 @@ int phy_init_eee(struct phy_device *phyd
cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
if (!cap)
- goto eee_exit;
+ return -EPROTONOSUPPORT;
/* Check which link settings negotiated and verify it in
* the EEE advertising registers.
@@ -1046,7 +1024,7 @@ int phy_init_eee(struct phy_device *phyd
lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp);
idx = phy_find_setting(phydev->speed, phydev->duplex);
if (!(lp & adv & settings[idx].setting))
- goto eee_exit;
+ return -EPROTONOSUPPORT;
if (clk_stop_enable) {
/* Configure the PHY to stop receiving xMII
@@ -1063,11 +1041,10 @@ int phy_init_eee(struct phy_device *phyd
MDIO_MMD_PCS, phydev->addr, val);
}
- ret = 0; /* EEE supported */
+ return 0; /* EEE supported */
}
-eee_exit:
- return ret;
+ return -EPROTONOSUPPORT;
}
EXPORT_SYMBOL(phy_init_eee);
Index: net-next/drivers/net/phy/phy_device.c
===================================================================
--- net-next.orig/drivers/net/phy/phy_device.c
+++ net-next/drivers/net/phy/phy_device.c
@@ -329,7 +329,6 @@ static int get_phy_id(struct mii_bus *bu
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
{
struct phy_c45_device_ids c45_ids = {0};
- struct phy_device *dev = NULL;
u32 phy_id = 0;
int r;
@@ -341,9 +340,7 @@ struct phy_device *get_phy_device(struct
if ((phy_id & 0x1fffffff) == 0x1fffffff)
return NULL;
- dev = phy_device_create(bus, addr, phy_id, is_c45, &c45_ids);
-
- return dev;
+ return phy_device_create(bus, addr, phy_id, is_c45, &c45_ids);
}
EXPORT_SYMBOL(get_phy_device);
@@ -783,7 +780,6 @@ static int genphy_config_advert(struct p
*/
int genphy_setup_forced(struct phy_device *phydev)
{
- int err;
int ctl = 0;
phydev->pause = 0;
@@ -797,9 +793,7 @@ int genphy_setup_forced(struct phy_devic
if (DUPLEX_FULL == phydev->duplex)
ctl |= BMCR_FULLDPLX;
- err = phy_write(phydev, MII_BMCR, ctl);
-
- return err;
+ return phy_write(phydev, MII_BMCR, ctl);
}
EXPORT_SYMBOL(genphy_setup_forced);
--
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