[PATCH 3/3] usb: Make sure each c67x00 TD has been executed

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From: Dave Tubbs <dave.tubbs@xxxxxxxxxxxxxx>

Make sure each c67x00 TD has been executed or retry using the existing
retry mechanism. Reference Cypress Semiconductor BIOS User's Manual 1.2,
page 3-16

Signed-off-by: Dave Tubbs <dave.tubbs@xxxxxxxxxxxxxx>
---
 drivers/usb/c67x00/c67x00-sched.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c
index aa49162..dd5bdb4 100644
--- a/drivers/usb/c67x00/c67x00-sched.c
+++ b/drivers/usb/c67x00/c67x00-sched.c
@@ -1033,6 +1033,12 @@ static inline void c67x00_check_td_list(struct c67x00_hcd *c67x00)
 		    !td_acked(td))
 			goto cont;

+		/* at this point, there are no errors, but it's still possible that the
+		* td wasn't executed by the c67x00. Confirm it was executed or force a
+		* retry */
+		if(((td->retry_cnt) & TD_RETRYCNTMASK_ACT_FLG) && (td->status == 0))
+			goto cont;
+
 		/* Sequence ok and acked, don't need to fix toggle */
 		ack_ok = 1;
 
-- 
1.7.1


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