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author | 2017-10-21 00:12:34 -0700 | |
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committer | 2017-11-21 15:46:44 -0800 | |
commit | 72a9f9a445d4e296484aa5dfbfea6254d01f7cf5 (patch) | |
tree | 664dc548e6684555b1a9d141bdff1eab328dbe6b /drivers/usb | |
parent | drivers/firmware: psci: Convert timers to use timer_setup() (diff) | |
download | linux-72a9f9a445d4e296484aa5dfbfea6254d01f7cf5.tar.gz linux-72a9f9a445d4e296484aa5dfbfea6254d01f7cf5.tar.bz2 linux-72a9f9a445d4e296484aa5dfbfea6254d01f7cf5.zip |
usb: usbatm: Convert timers to use timer_setup()
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. Additionally corrects and on-stack
timer usage.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Duncan Sands <duncan.sands@free.fr>
Cc: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Cc: accessrunner-general@lists.sourceforge.net
Cc: linux-usb@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Allen Pais <allen.lkml@gmail.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r-- | drivers/usb/atm/cxacru.c | 23 | ||||
-rw-r--r-- | drivers/usb/atm/speedtch.c | 16 | ||||
-rw-r--r-- | drivers/usb/atm/usbatm.c | 10 |
3 files changed, 29 insertions, 20 deletions
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index 6470d259b7d8..8af797252af2 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -547,21 +547,30 @@ static void cxacru_blocking_completion(struct urb *urb) complete(urb->context); } -static void cxacru_timeout_kill(unsigned long data) +struct cxacru_timer { + struct timer_list timer; + struct urb *urb; +}; + +static void cxacru_timeout_kill(struct timer_list *t) { - usb_unlink_urb((struct urb *) data); + struct cxacru_timer *timer = from_timer(timer, t, timer); + + usb_unlink_urb(timer->urb); } static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, int *actual_length) { - struct timer_list timer; + struct cxacru_timer timer = { + .urb = urb, + }; - setup_timer(&timer, cxacru_timeout_kill, (unsigned long)urb); - timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT); - add_timer(&timer); + timer_setup_on_stack(&timer.timer, cxacru_timeout_kill, 0); + mod_timer(&timer.timer, jiffies + msecs_to_jiffies(CMD_TIMEOUT)); wait_for_completion(done); - del_timer_sync(&timer); + del_timer_sync(&timer.timer); + destroy_timer_on_stack(&timer.timer); if (actual_length) *actual_length = urb->actual_length; diff --git a/drivers/usb/atm/speedtch.c b/drivers/usb/atm/speedtch.c index 5a5e8c0aaa39..973548b5c15c 100644 --- a/drivers/usb/atm/speedtch.c +++ b/drivers/usb/atm/speedtch.c @@ -557,9 +557,10 @@ static void speedtch_check_status(struct work_struct *work) } } -static void speedtch_status_poll(unsigned long data) +static void speedtch_status_poll(struct timer_list *t) { - struct speedtch_instance_data *instance = (void *)data; + struct speedtch_instance_data *instance = from_timer(instance, t, + status_check_timer); schedule_work(&instance->status_check_work); @@ -570,9 +571,10 @@ static void speedtch_status_poll(unsigned long data) atm_warn(instance->usbatm, "Too many failures - disabling line status polling\n"); } -static void speedtch_resubmit_int(unsigned long data) +static void speedtch_resubmit_int(struct timer_list *t) { - struct speedtch_instance_data *instance = (void *)data; + struct speedtch_instance_data *instance = from_timer(instance, t, + resubmit_timer); struct urb *int_urb = instance->int_urb; int ret; @@ -860,13 +862,11 @@ static int speedtch_bind(struct usbatm_data *usbatm, usbatm->flags |= (use_isoc ? UDSL_USE_ISOC : 0); INIT_WORK(&instance->status_check_work, speedtch_check_status); - setup_timer(&instance->status_check_timer, speedtch_status_poll, - (unsigned long)instance); + timer_setup(&instance->status_check_timer, speedtch_status_poll, 0); instance->last_status = 0xff; instance->poll_delay = MIN_POLL_DELAY; - setup_timer(&instance->resubmit_timer, speedtch_resubmit_int, - (unsigned long)instance); + timer_setup(&instance->resubmit_timer, speedtch_resubmit_int, 0); instance->int_urb = usb_alloc_urb(0, GFP_KERNEL); diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index 044264aa1f96..dbea28495e1d 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -989,18 +989,18 @@ static int usbatm_heavy_init(struct usbatm_data *instance) return 0; } -static void usbatm_tasklet_schedule(unsigned long data) +static void usbatm_tasklet_schedule(struct timer_list *t) { - tasklet_schedule((struct tasklet_struct *) data); + struct usbatm_channel *channel = from_timer(channel, t, delay); + + tasklet_schedule(&channel->tasklet); } static void usbatm_init_channel(struct usbatm_channel *channel) { spin_lock_init(&channel->lock); INIT_LIST_HEAD(&channel->list); - channel->delay.function = usbatm_tasklet_schedule; - channel->delay.data = (unsigned long) &channel->tasklet; - init_timer(&channel->delay); + timer_setup(&channel->delay, usbatm_tasklet_schedule, 0); } int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, |