diff options
| -rw-r--r-- | drivers/mailbox/arm_mhu.c | 2 | ||||
| -rw-r--r-- | drivers/mailbox/bcm2835-mailbox.c | 1 | ||||
| -rw-r--r-- | drivers/mailbox/mailbox.c | 27 | ||||
| -rw-r--r-- | include/linux/mailbox_controller.h | 7 |
4 files changed, 20 insertions, 17 deletions
diff --git a/drivers/mailbox/arm_mhu.c b/drivers/mailbox/arm_mhu.c index d0d0b0305345..99befa76e37c 100644 --- a/drivers/mailbox/arm_mhu.c +++ b/drivers/mailbox/arm_mhu.c @@ -148,7 +148,7 @@ static int mhu_probe(struct amba_device *adev, const struct amba_id *id) mhu->mbox.ops = &mhu_ops; mhu->mbox.txdone_irq = false; mhu->mbox.txdone_poll = true; - mhu->mbox.txpoll_period = 10; + mhu->mbox.txpoll_period = 1; amba_set_drvdata(adev, mhu); diff --git a/drivers/mailbox/bcm2835-mailbox.c b/drivers/mailbox/bcm2835-mailbox.c index 0b47dd42f3bd..cfb4b4496dd9 100644 --- a/drivers/mailbox/bcm2835-mailbox.c +++ b/drivers/mailbox/bcm2835-mailbox.c @@ -204,7 +204,6 @@ MODULE_DEVICE_TABLE(of, bcm2835_mbox_of_match); static struct platform_driver bcm2835_mbox_driver = { .driver = { .name = "bcm2835-mbox", - .owner = THIS_MODULE, .of_match_table = bcm2835_mbox_of_match, }, .probe = bcm2835_mbox_probe, diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c index c7fdb57fd166..6a4811f85705 100644 --- a/drivers/mailbox/mailbox.c +++ b/drivers/mailbox/mailbox.c @@ -26,8 +26,6 @@ static LIST_HEAD(mbox_cons); static DEFINE_MUTEX(con_mutex); -static void poll_txdone(unsigned long data); - static int add_to_rbuf(struct mbox_chan *chan, void *mssg) { int idx; @@ -88,7 +86,9 @@ exit: spin_unlock_irqrestore(&chan->lock, flags); if (!err && (chan->txdone_method & TXDONE_BY_POLL)) - poll_txdone((unsigned long)chan->mbox); + /* kick start the timer immediately to avoid delays */ + hrtimer_start(&chan->mbox->poll_hrt, ktime_set(0, 0), + HRTIMER_MODE_REL); } static void tx_tick(struct mbox_chan *chan, int r) @@ -112,9 +112,10 @@ static void tx_tick(struct mbox_chan *chan, int r) complete(&chan->tx_complete); } -static void poll_txdone(unsigned long data) +static enum hrtimer_restart txdone_hrtimer(struct hrtimer *hrtimer) { - struct mbox_controller *mbox = (struct mbox_controller *)data; + struct mbox_controller *mbox = + container_of(hrtimer, struct mbox_controller, poll_hrt); bool txdone, resched = false; int i; @@ -130,9 +131,11 @@ static void poll_txdone(unsigned long data) } } - if (resched) - mod_timer(&mbox->poll, jiffies + - msecs_to_jiffies(mbox->txpoll_period)); + if (resched) { + hrtimer_forward_now(hrtimer, ms_to_ktime(mbox->txpoll_period)); + return HRTIMER_RESTART; + } + return HRTIMER_NORESTART; } /** @@ -451,9 +454,9 @@ int mbox_controller_register(struct mbox_controller *mbox) txdone = TXDONE_BY_ACK; if (txdone == TXDONE_BY_POLL) { - mbox->poll.function = &poll_txdone; - mbox->poll.data = (unsigned long)mbox; - init_timer(&mbox->poll); + hrtimer_init(&mbox->poll_hrt, CLOCK_MONOTONIC, + HRTIMER_MODE_REL); + mbox->poll_hrt.function = txdone_hrtimer; } for (i = 0; i < mbox->num_chans; i++) { @@ -495,7 +498,7 @@ void mbox_controller_unregister(struct mbox_controller *mbox) mbox_free_channel(&mbox->chans[i]); if (mbox->txdone_poll) - del_timer_sync(&mbox->poll); + hrtimer_cancel(&mbox->poll_hrt); mutex_unlock(&con_mutex); } diff --git a/include/linux/mailbox_controller.h b/include/linux/mailbox_controller.h index 68c42454439b..74deadb42d76 100644 --- a/include/linux/mailbox_controller.h +++ b/include/linux/mailbox_controller.h @@ -9,7 +9,7 @@ #include <linux/of.h> #include <linux/types.h> -#include <linux/timer.h> +#include <linux/hrtimer.h> #include <linux/device.h> #include <linux/completion.h> @@ -67,7 +67,8 @@ struct mbox_chan_ops { * @txpoll_period: If 'txdone_poll' is in effect, the API polls for * last TX's status after these many millisecs * @of_xlate: Controller driver specific mapping of channel via DT - * @poll: API private. Used to poll for TXDONE on all channels. + * @poll_hrt: API private. hrtimer used to poll for TXDONE on all + * channels. * @node: API private. To hook into list of controllers. */ struct mbox_controller { @@ -81,7 +82,7 @@ struct mbox_controller { struct mbox_chan *(*of_xlate)(struct mbox_controller *mbox, const struct of_phandle_args *sp); /* Internal to API */ - struct timer_list poll; + struct hrtimer poll_hrt; struct list_head node; }; |