Commit 249751f22380 ("usb: phy: twl4030-usb: poll for ID disconnect")
added twl4030_id_workaround_work() to deal with lost interrupts
after ID pin goes down. However, this currently only works for the
insertion. The PHY interrupts are not working after disconnecting
an USB-A device from the board, and the deeper idle states for
omap are blocked as the USB controller stays busy.
The issue can be solved by calling delayed work from twl4030_usb_irq()
when ID pin is down and the PHY is not asleep like we already do
in twl4030_id_workaround_work().
But as both twl4030_usb_irq() and twl4030_id_workaround_work()
already do pretty much the same thing, let's call twl4030_usb_irq()
from twl4030_id_workaround_work() instead of adding some more
duplicate code.
Fixes: 249751f22380 ("usb: phy: twl4030-usb: poll for ID disconnect")
Cc: stable@xxxxxxxxxxxxxxx # v3.12+
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
This too is intended for the v3.17-rc cycle if no objections.
--- a/drivers/phy/phy-twl4030-usb.c
+++ b/drivers/phy/phy-twl4030-usb.c
@@ -589,6 +589,13 @@ static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
}
omap_musb_mailbox(status);
}
+
+ /* don't schedule during sleep - irq works right then */
+ if (status == OMAP_MUSB_ID_GROUND && !twl->asleep) {
+ cancel_delayed_work(&twl->id_workaround_work);
+ schedule_delayed_work(&twl->id_workaround_work, HZ);
+ }
+
sysfs_notify(&twl->dev->kobj, NULL, "vbus");
return IRQ_HANDLED;
@@ -598,29 +605,8 @@ static void twl4030_id_workaround_work(struct work_struct *work)
{
struct twl4030_usb *twl = container_of(work, struct twl4030_usb,
id_workaround_work.work);
- enum omap_musb_vbus_id_status status;
- bool status_changed = false;
-
- status = twl4030_usb_linkstat(twl);
- spin_lock_irq(&twl->lock);
- if (status >= 0 && status != twl->linkstat) {
- twl->linkstat = status;
- status_changed = true;
- }
- spin_unlock_irq(&twl->lock);
-
- if (status_changed) {
- dev_dbg(twl->dev, "handle missing status change to %d\n",
- status);
- omap_musb_mailbox(status);
- }
-
- /* don't schedule during sleep - irq works right then */
- if (status == OMAP_MUSB_ID_GROUND && !twl->asleep) {
- cancel_delayed_work(&twl->id_workaround_work);
- schedule_delayed_work(&twl->id_workaround_work, HZ);
- }
+ twl4030_usb_irq(0, twl);
}
static int twl4030_phy_init(struct phy *phy)
--
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