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

[Kees Cook]

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. Adds a static tracking variable to
match the timer global.

Cc: Felipe Balbi <balbi@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
 drivers/usb/gadget/legacy/zero.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/gadget/legacy/zero.c b/drivers/usb/gadget/legacy/zero.c
index d02e2ce73ea5..3acc589dae98 100644
--- a/drivers/usb/gadget/legacy/zero.c
+++ b/drivers/usb/gadget/legacy/zero.c
@@ -154,10 +154,11 @@ static struct usb_gadget_strings *dev_strings[] = {
 /*-------------------------------------------------------------------------*/
 
 static struct timer_list	autoresume_timer;
+static struct usb_composite_dev *autoresume_cdev;
 
-static void zero_autoresume(unsigned long _c)
+static void zero_autoresume(struct timer_list *unused)
 {
-	struct usb_composite_dev	*cdev = (void *)_c;
+	struct usb_composite_dev	*cdev = autoresume_cdev;
 	struct usb_gadget		*g = cdev->gadget;
 
 	/* unconfigured devices can't issue wakeups */
@@ -282,7 +283,8 @@ static int zero_bind(struct usb_composite_dev *cdev)
 	device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
 	device_desc.iSerialNumber = strings_dev[USB_GADGET_SERIAL_IDX].id;
 
-	setup_timer(&autoresume_timer, zero_autoresume, (unsigned long) cdev);
+	autoresume_cdev = cdev;
+	timer_setup(&autoresume_timer, zero_autoresume, 0);
 
 	func_inst_ss = usb_get_function_instance("SourceSink");
 	if (IS_ERR(func_inst_ss))
-- 
2.7.4


-- 
Kees Cook
Pixel Security