We need a pm_runtime_get_sync() call from
within musb_gadget_pullup() to make sure
registers are accessible at that time.
The problem is that musb_gadget_pullup() is
called with IRQs disabled and, because of that,
we need to tell pm_runtime that this pm_runtime_get_sync()
is IRQ safe.
Reported-by: Pali Rohár <pali.ro...@gmail.com>
Signed-off-by: Felipe Balbi <ba...@ti.com>
---
drivers/usb/musb/musb_core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 34cce3e38c49..15bbf577c8ce 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1970,6 +1970,7 @@ musb_init_controller(struct device *dev, int nIrq, void
__iomem *ctrl)
pm_runtime_use_autosuspend(musb->controller);
pm_runtime_set_autosuspend_delay(musb->controller, 200);
+ pm_runtime_irq_safe(musb->controller);
pm_runtime_enable(musb->controller);
spin_lock_init(&musb->lock);
--
2.3.0-rc1
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
