diff mbox series

gadgetfs: ep_io - wait until IRQ finishes

Message ID 20220708070645.6130-1-jomajm@gmail.com
State New
Headers show
Series gadgetfs: ep_io - wait until IRQ finishes | expand

Commit Message

Jozef Martiniak July 8, 2022, 7:06 a.m. UTC 
after usb_ep_queue() if wait_for_completion_interruptible() is
interrupted we need to wait until IRQ gets finished.

Otherwise complete() from epio_complete() can corrupt stack.

Signed-off-by: Jozef Martiniak <jomajm@gmail.com>
---
 drivers/usb/gadget/legacy/inode.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index 79990597c39f..01c3ead7d1b4 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -362,6 +362,7 @@  ep_io (struct ep_data *epdata, void *buf, unsigned len)
 				spin_unlock_irq (&epdata->dev->lock);
 
 				DBG (epdata->dev, "endpoint gone\n");
+				wait_for_completion(&done);
 				epdata->status = -ENODEV;
 			}
 		}