From: Pascal Huerst <pascal.huerst@xxxxxxxxx>
In certain situations, an interrupt triggers on resume, before musb_start()
has been called. This has been observed to cause enumeration issues after
suspend/resume cycles with AM335x.
Signed-off-by: Pascal Huerst <pascal.huerst@xxxxxxxxx>
---
drivers/usb/musb/musb_core.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 68bf6d8..d861c21 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2421,6 +2421,9 @@ static int musb_suspend(struct device *dev)
struct musb *musb = dev_to_musb(dev);
unsigned long flags;
+ musb_platform_disable(musb);
+ musb_generic_disable(musb);
+
spin_lock_irqsave(&musb->lock, flags);
if (is_peripheral_active(musb)) {
@@ -2474,6 +2477,9 @@ static int musb_resume(struct device *dev)
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
+
+ musb_start(musb);
+
return 0;
}
--
2.4.3
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