linux-kernel - [PATCH 3/3] usb: host: fotg210: fix the actual

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Message-Id: <20210627125747.127646-4-kelly.devilliv@gmail.com>
Date:   Sun, 27 Jun 2021 20:57:47 +0800
From:   Kelly Devilliv <kelly.devilliv@...il.com>
To:     gregkh@...uxfoundation.org, shubhankarvk@...il.com,
        lee.jones@...aro.org, gustavoars@...nel.org,
        chunfeng.yun@...iatek.com
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kelly Devilliv <kelly.devilliv@...il.com>
Subject: [PATCH 3/3] usb: host: fotg210: fix the actual_length of an iso packet

We should acquire the actual_length of an iso packet
from the iTD directly using FOTG210_ITD_LENGTH() macro.

Signed-off-by: Kelly Devilliv <kelly.devilliv@...il.com>
---
 drivers/usb/host/fotg210-hcd.c | 5 ++---
 drivers/usb/host/fotg210.h     | 5 -----
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
index c38a6c2a8d95..48ff10958d0d 100644
--- a/drivers/usb/host/fotg210-hcd.c
+++ b/drivers/usb/host/fotg210-hcd.c
@@ -4462,13 +4462,12 @@ static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
 
 			/* HC need not update length with this error */
 			if (!(t & FOTG210_ISOC_BABBLE)) {
-				desc->actual_length =
-					fotg210_itdlen(urb, desc, t);
+				desc->actual_length = FOTG210_ITD_LENGTH(t);
 				urb->actual_length += desc->actual_length;
 			}
 		} else if (likely((t & FOTG210_ISOC_ACTIVE) == 0)) {
 			desc->status = 0;
-			desc->actual_length = fotg210_itdlen(urb, desc, t);
+			desc->actual_length = FOTG210_ITD_LENGTH(t);
 			urb->actual_length += desc->actual_length;
 		} else {
 			/* URB was too late */
diff --git a/drivers/usb/host/fotg210.h b/drivers/usb/host/fotg210.h
index 6cee40ec65b4..67f59517ebad 100644
--- a/drivers/usb/host/fotg210.h
+++ b/drivers/usb/host/fotg210.h
@@ -686,11 +686,6 @@ static inline unsigned fotg210_read_frame_index(struct fotg210_hcd *fotg210)
 	return fotg210_readl(fotg210, &fotg210->regs->frame_index);
 }
 
-#define fotg210_itdlen(urb, desc, t) ({			\
-	usb_pipein((urb)->pipe) ?				\
-	(desc)->length - FOTG210_ITD_LENGTH(t) :			\
-	FOTG210_ITD_LENGTH(t);					\
-})
 /*-------------------------------------------------------------------------*/
 
 #endif /* __LINUX_FOTG210_H */
-- 
2.25.1