Fixes occasional urb submitted while active.
Even thought the fMP_CONTROL_WRITES/fMP_CONTROL_READS flags
are cleared in the return context urb->hcpriv is not NULL.
check for hcpriv and return STATUS_FAILURE if not NULL.
Signed-off-by: Malcolm Priestley <[email protected]>
---
drivers/staging/vt6656/usbpipe.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c
index 3a03f1d..37bcb18 100644
--- a/drivers/staging/vt6656/usbpipe.c
+++ b/drivers/staging/vt6656/usbpipe.c
@@ -118,6 +118,9 @@ int PIPEnsControlOut(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
if (pDevice->Flags & fMP_CONTROL_READS)
return STATUS_FAILURE;
+ if (pDevice->pControlURB->hcpriv)
+ return STATUS_FAILURE;
+
MP_SET_FLAG(pDevice, fMP_CONTROL_WRITES);
pDevice->sUsbCtlRequest.bRequestType = 0x40;
@@ -177,6 +180,9 @@ int PIPEnsControlIn(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
if (pDevice->Flags & fMP_CONTROL_WRITES)
return STATUS_FAILURE;
+ if (pDevice->pControlURB->hcpriv)
+ return STATUS_FAILURE;
+
MP_SET_FLAG(pDevice, fMP_CONTROL_READS);
pDevice->sUsbCtlRequest.bRequestType = 0xC0;
--
1.8.3.2