[PATCH] net/ti/tlan: Convert timers to use timer_setup()

From: Kees Cook
Date: Wed Oct 04 2017 - 20:50:20 EST


In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Samuel Chessman <chessman@xxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
This requires commit 686fef928bba ("timer: Prepare to change timer
callback argument type") in v4.14-rc3, but should be otherwise
stand-alone.
---
drivers/net/ethernet/ti/tlan.c | 32 +++++++++++++-------------------
1 file changed, 13 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index c8d53d8c83ee..8f53d762fbc4 100644
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c
@@ -172,7 +172,8 @@ static u32 tlan_handle_tx_eoc(struct net_device *, u16);
static u32 tlan_handle_status_check(struct net_device *, u16);
static u32 tlan_handle_rx_eoc(struct net_device *, u16);

-static void tlan_timer(unsigned long);
+static void tlan_timer(struct timer_list *t);
+static void tlan_phy_monitor(struct timer_list *t);

static void tlan_reset_lists(struct net_device *);
static void tlan_free_lists(struct net_device *);
@@ -190,7 +191,6 @@ static void tlan_phy_power_up(struct net_device *);
static void tlan_phy_reset(struct net_device *);
static void tlan_phy_start_link(struct net_device *);
static void tlan_phy_finish_auto_neg(struct net_device *);
-static void tlan_phy_monitor(unsigned long);

/*
static int tlan_phy_nop(struct net_device *);
@@ -254,11 +254,10 @@ tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
spin_unlock_irqrestore(&priv->lock, flags);
return;
}
- priv->timer.function = tlan_timer;
+ priv->timer.function = (TIMER_FUNC_TYPE)tlan_timer;
if (!in_irq())
spin_unlock_irqrestore(&priv->lock, flags);

- priv->timer.data = (unsigned long) dev;
priv->timer_set_at = jiffies;
priv->timer_type = type;
mod_timer(&priv->timer, jiffies + ticks);
@@ -926,8 +925,8 @@ static int tlan_open(struct net_device *dev)
return err;
}

- init_timer(&priv->timer);
- init_timer(&priv->media_timer);
+ timer_setup(&priv->timer, NULL, 0);
+ timer_setup(&priv->media_timer, tlan_phy_monitor, 0);

tlan_start(dev);

@@ -1426,8 +1425,7 @@ static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
tlan_dio_write8(dev->base_addr,
TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
if (priv->timer.function == NULL) {
- priv->timer.function = tlan_timer;
- priv->timer.data = (unsigned long) dev;
+ priv->timer.function = (TIMER_FUNC_TYPE)tlan_timer;
priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
priv->timer_set_at = jiffies;
priv->timer_type = TLAN_TIMER_ACTIVITY;
@@ -1578,8 +1576,7 @@ static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
tlan_dio_write8(dev->base_addr,
TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
if (priv->timer.function == NULL) {
- priv->timer.function = tlan_timer;
- priv->timer.data = (unsigned long) dev;
+ priv->timer.function = (TIMER_FUNC_TYPE)tlan_timer;
priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
priv->timer_set_at = jiffies;
priv->timer_type = TLAN_TIMER_ACTIVITY;
@@ -1836,10 +1833,10 @@ ThunderLAN driver timer function
*
**************************************************************/

-static void tlan_timer(unsigned long data)
+static void tlan_timer(struct timer_list *t)
{
- struct net_device *dev = (struct net_device *) data;
- struct tlan_priv *priv = netdev_priv(dev);
+ struct tlan_priv *priv = from_timer(priv, t, timer);
+ struct net_device *dev = priv->dev;
u32 elapsed;
unsigned long flags = 0;

@@ -1872,7 +1869,6 @@ static void tlan_timer(unsigned long data)
tlan_dio_write8(dev->base_addr,
TLAN_LED_REG, TLAN_LED_LINK);
} else {
- priv->timer.function = tlan_timer;
priv->timer.expires = priv->timer_set_at
+ TLAN_TIMER_ACT_DELAY;
spin_unlock_irqrestore(&priv->lock, flags);
@@ -2317,8 +2313,6 @@ tlan_finish_reset(struct net_device *dev)
} else
netdev_info(dev, "Link active\n");
/* Enabling link beat monitoring */
- priv->media_timer.function = tlan_phy_monitor;
- priv->media_timer.data = (unsigned long) dev;
priv->media_timer.expires = jiffies + HZ;
add_timer(&priv->media_timer);
}
@@ -2763,10 +2757,10 @@ static void tlan_phy_finish_auto_neg(struct net_device *dev)
*
*******************************************************************/

-static void tlan_phy_monitor(unsigned long data)
+static void tlan_phy_monitor(struct timer_list *t)
{
- struct net_device *dev = (struct net_device *) data;
- struct tlan_priv *priv = netdev_priv(dev);
+ struct tlan_priv *priv = from_timer(priv, t, media_timer);
+ struct net_device *dev = priv->dev;
u16 phy;
u16 phy_status;

--
2.7.4


--
Kees Cook
Pixel Security