[PATCH] staging: wlan-ng: Convert timers to use timer_setup()

From: Kees Cook
Date: Wed Oct 18 2017 - 16:23:41 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: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Sergio Paracuellos <sergio.paracuellos@xxxxxxxxx>
Cc: Adrien Descamps <adrien.descamps@xxxxxxxxx>
Cc: Thibaut SAUTEREAU <thibaut.sautereau@xxxxxxxxxxxxxxxxxxx>
Cc: devel@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
drivers/staging/wlan-ng/hfa384x_usb.c | 29 +++++++++++++----------------
drivers/staging/wlan-ng/prism2mgmt.h | 2 +-
drivers/staging/wlan-ng/prism2sta.c | 4 ++--
3 files changed, 16 insertions(+), 19 deletions(-)

diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c
index d1e8218f96fb..5975d47dfa71 100644
--- a/drivers/staging/wlan-ng/hfa384x_usb.c
+++ b/drivers/staging/wlan-ng/hfa384x_usb.c
@@ -184,11 +184,11 @@ static void hfa384x_usbin_ctlx(struct hfa384x *hw, union hfa384x_usbin *usbin,

static void hfa384x_usbctlxq_run(struct hfa384x *hw);

-static void hfa384x_usbctlx_reqtimerfn(unsigned long data);
+static void hfa384x_usbctlx_reqtimerfn(struct timer_list *t);

-static void hfa384x_usbctlx_resptimerfn(unsigned long data);
+static void hfa384x_usbctlx_resptimerfn(struct timer_list *t);

-static void hfa384x_usb_throttlefn(unsigned long data);
+static void hfa384x_usb_throttlefn(struct timer_list *t);

static void hfa384x_usbctlx_completion_task(unsigned long data);

@@ -558,13 +558,11 @@ void hfa384x_create(struct hfa384x *hw, struct usb_device *usb)
INIT_WORK(&hw->link_bh, prism2sta_processing_defer);
INIT_WORK(&hw->usb_work, hfa384x_usb_defer);

- setup_timer(&hw->throttle, hfa384x_usb_throttlefn, (unsigned long)hw);
+ timer_setup(&hw->throttle, hfa384x_usb_throttlefn, 0);

- setup_timer(&hw->resptimer, hfa384x_usbctlx_resptimerfn,
- (unsigned long)hw);
+ timer_setup(&hw->resptimer, hfa384x_usbctlx_resptimerfn, 0);

- setup_timer(&hw->reqtimer, hfa384x_usbctlx_reqtimerfn,
- (unsigned long)hw);
+ timer_setup(&hw->reqtimer, hfa384x_usbctlx_reqtimerfn, 0);

usb_init_urb(&hw->rx_urb);
usb_init_urb(&hw->tx_urb);
@@ -574,8 +572,7 @@ void hfa384x_create(struct hfa384x *hw, struct usb_device *usb)
hw->state = HFA384x_STATE_INIT;

INIT_WORK(&hw->commsqual_bh, prism2sta_commsqual_defer);
- setup_timer(&hw->commsqual_timer, prism2sta_commsqual_timer,
- (unsigned long)hw);
+ timer_setup(&hw->commsqual_timer, prism2sta_commsqual_timer, 0);
}

/*----------------------------------------------------------------
@@ -3800,9 +3797,9 @@ static void hfa384x_ctlxout_callback(struct urb *urb)
* interrupt
*----------------------------------------------------------------
*/
-static void hfa384x_usbctlx_reqtimerfn(unsigned long data)
+static void hfa384x_usbctlx_reqtimerfn(struct timer_list *t)
{
- struct hfa384x *hw = (struct hfa384x *)data;
+ struct hfa384x *hw = from_timer(hw, t, reqtimer);
unsigned long flags;

spin_lock_irqsave(&hw->ctlxq.lock, flags);
@@ -3859,9 +3856,9 @@ static void hfa384x_usbctlx_reqtimerfn(unsigned long data)
* interrupt
*----------------------------------------------------------------
*/
-static void hfa384x_usbctlx_resptimerfn(unsigned long data)
+static void hfa384x_usbctlx_resptimerfn(struct timer_list *t)
{
- struct hfa384x *hw = (struct hfa384x *)data;
+ struct hfa384x *hw = from_timer(hw, t, resptimer);
unsigned long flags;

spin_lock_irqsave(&hw->ctlxq.lock, flags);
@@ -3899,9 +3896,9 @@ static void hfa384x_usbctlx_resptimerfn(unsigned long data)
* Interrupt
*----------------------------------------------------------------
*/
-static void hfa384x_usb_throttlefn(unsigned long data)
+static void hfa384x_usb_throttlefn(struct timer_list *t)
{
- struct hfa384x *hw = (struct hfa384x *)data;
+ struct hfa384x *hw = from_timer(hw, t, throttle);
unsigned long flags;

spin_lock_irqsave(&hw->ctlxq.lock, flags);
diff --git a/drivers/staging/wlan-ng/prism2mgmt.h b/drivers/staging/wlan-ng/prism2mgmt.h
index 88b979ff68b3..c062418f1202 100644
--- a/drivers/staging/wlan-ng/prism2mgmt.h
+++ b/drivers/staging/wlan-ng/prism2mgmt.h
@@ -109,7 +109,7 @@ int prism2mgmt_get_grpaddr_index(u32 did);
void prism2sta_processing_defer(struct work_struct *data);

void prism2sta_commsqual_defer(struct work_struct *data);
-void prism2sta_commsqual_timer(unsigned long data);
+void prism2sta_commsqual_timer(struct timer_list *t);

/* Interface callback functions, passing data back up to the cfg80211 layer */
void prism2_connect_result(struct wlandevice *wlandev, u8 failed);
diff --git a/drivers/staging/wlan-ng/prism2sta.c b/drivers/staging/wlan-ng/prism2sta.c
index 070a237004cb..99316b9a4e49 100644
--- a/drivers/staging/wlan-ng/prism2sta.c
+++ b/drivers/staging/wlan-ng/prism2sta.c
@@ -2004,9 +2004,9 @@ void prism2sta_commsqual_defer(struct work_struct *data)
mod_timer(&hw->commsqual_timer, jiffies + HZ);
}

-void prism2sta_commsqual_timer(unsigned long data)
+void prism2sta_commsqual_timer(struct timer_list *t)
{
- struct hfa384x *hw = (struct hfa384x *)data;
+ struct hfa384x *hw = from_timer(hw, t, commsqual_timer);

schedule_work(&hw->commsqual_bh);
}
--
2.7.4


--
Kees Cook
Pixel Security