[PATCH] usb: isp1760: Convert timers to use timer_setup()

From: Kees Cook
Date: Tue Oct 24 2017 - 06:08:24 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: "Gustavo A. R. Silva" <garsilva@xxxxxxxxxxxxxx>
Cc: Bhumika Goyal <bhumirks@xxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
drivers/usb/isp1760/isp1760-hcd.c | 8 +++++---
drivers/usb/isp1760/isp1760-udc.c | 7 +++----
2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 8e59e0c02b8a..2b67eb889d41 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -1258,10 +1258,11 @@ static irqreturn_t isp1760_irq(struct usb_hcd *hcd)
#define SLOT_TIMEOUT 300
#define SLOT_CHECK_PERIOD 200
static struct timer_list errata2_timer;
+static struct usb_hcd *errata2_timer_hcd;

-static void errata2_function(unsigned long data)
+static void errata2_function(struct timer_list *unused)
{
- struct usb_hcd *hcd = (struct usb_hcd *) data;
+ struct usb_hcd *hcd = errata2_timer_hcd;
struct isp1760_hcd *priv = hcd_to_priv(hcd);
int slot;
struct ptd ptd;
@@ -1333,7 +1334,8 @@ static int isp1760_run(struct usb_hcd *hcd)
if (retval)
return retval;

- setup_timer(&errata2_timer, errata2_function, (unsigned long)hcd);
+ errata2_timer_hcd = hcd;
+ timer_setup(&errata2_timer, errata2_function, 0);
errata2_timer.expires = jiffies + msecs_to_jiffies(SLOT_CHECK_PERIOD);
add_timer(&errata2_timer);

diff --git a/drivers/usb/isp1760/isp1760-udc.c b/drivers/usb/isp1760/isp1760-udc.c
index 69400f3da886..ad566f27dffe 100644
--- a/drivers/usb/isp1760/isp1760-udc.c
+++ b/drivers/usb/isp1760/isp1760-udc.c
@@ -1331,9 +1331,9 @@ static irqreturn_t isp1760_udc_irq(int irq, void *dev)
return status ? IRQ_HANDLED : IRQ_NONE;
}

-static void isp1760_udc_vbus_poll(unsigned long data)
+static void isp1760_udc_vbus_poll(struct timer_list *t)
{
- struct isp1760_udc *udc = (struct isp1760_udc *)data;
+ struct isp1760_udc *udc = from_timer(udc, t, vbus_timer);
unsigned long flags;

spin_lock_irqsave(&udc->lock, flags);
@@ -1452,8 +1452,7 @@ int isp1760_udc_register(struct isp1760_device *isp, int irq,
udc->regs = isp->regs;

spin_lock_init(&udc->lock);
- setup_timer(&udc->vbus_timer, isp1760_udc_vbus_poll,
- (unsigned long)udc);
+ timer_setup(&udc->vbus_timer, isp1760_udc_vbus_poll, 0);

ret = isp1760_udc_init(udc);
if (ret < 0)
--
2.7.4


--
Kees Cook
Pixel Security