usb: musb: Disable interrupts on suspend, enable them on resume

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@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index d105c6dcbbec..4a518ff12310 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2449,6 +2449,9 @@ 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)) {
@@ -2502,6 +2505,9 @@ 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;
 }