diff options
| author | Felipe Balbi <balbi@ti.com> | 2015-02-26 23:27:12 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-03-10 23:33:29 +0300 |
| commit | 83b8f5b8c07c8cbad8c14c7b8767e7219a6c1813 (patch) | |
| tree | 12f0a696bdd190895b6857e370c3307db98a5b4c | |
| parent | b28a6432405ca95b3da25630d79d2463c754a79c (diff) | |
| download | linux-83b8f5b8c07c8cbad8c14c7b8767e7219a6c1813.tar.xz | |
usb: musb: core: drop recover_work
that's not needed anymore. Everything that we
call is irq-safe, so we might as well not
have a delayed work for babble recovery.
Tested-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 17 | ||||
| -rw-r--r-- | drivers/usb/musb/musb_core.h | 1 |
2 files changed, 9 insertions, 9 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index bf9746287d7c..b410af6b0510 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -509,6 +509,7 @@ void musb_hnp_stop(struct musb *musb) static void musb_disable_interrupts(struct musb *musb); static void musb_generic_disable(struct musb *musb); +static void musb_recover_from_babble(struct musb *musb); /* * Interrupt Service Routine to record USB "global" interrupts. @@ -885,8 +886,7 @@ b_host: if (is_host_active(musb)) { musb_disable_interrupts(musb); - schedule_delayed_work(&musb->recover_work, - usecs_to_jiffies(10)); + musb_recover_from_babble(musb); } } } else { @@ -1831,13 +1831,17 @@ static void musb_irq_work(struct work_struct *data) } } -/* Recover from babble interrupt conditions */ -static void musb_recover_work(struct work_struct *data) +static void musb_recover_from_babble(struct musb *musb) { - struct musb *musb = container_of(data, struct musb, recover_work.work); int ret; u8 devctl; + /* + * wait at least 320 cycles of 60MHz clock. That's 5.3us, we will give + * it some slack and wait for 10us. + */ + udelay(10); + ret = musb_platform_recover(musb); if (ret) { musb_enable_interrupts(musb); @@ -2098,7 +2102,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) /* Init IRQ workqueue before request_irq */ INIT_WORK(&musb->irq_work, musb_irq_work); - INIT_DELAYED_WORK(&musb->recover_work, musb_recover_work); INIT_DELAYED_WORK(&musb->deassert_reset_work, musb_deassert_reset); INIT_DELAYED_WORK(&musb->finish_resume_work, musb_host_finish_resume); @@ -2194,7 +2197,6 @@ fail4: fail3: cancel_work_sync(&musb->irq_work); - cancel_delayed_work_sync(&musb->recover_work); cancel_delayed_work_sync(&musb->finish_resume_work); cancel_delayed_work_sync(&musb->deassert_reset_work); if (musb->dma_controller) @@ -2260,7 +2262,6 @@ static int musb_remove(struct platform_device *pdev) dma_controller_destroy(musb->dma_controller); cancel_work_sync(&musb->irq_work); - cancel_delayed_work_sync(&musb->recover_work); cancel_delayed_work_sync(&musb->finish_resume_work); cancel_delayed_work_sync(&musb->deassert_reset_work); musb_free(musb); diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 1e03c7ec82e4..3877249a8b2d 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -301,7 +301,6 @@ struct musb { irqreturn_t (*isr)(int, void *); struct work_struct irq_work; - struct delayed_work recover_work; struct delayed_work deassert_reset_work; struct delayed_work finish_resume_work; u16 hwvers; |