linux-kernel - [PATCH v2] usb: cdnsp: Fixes incorrect value in ISOC TRB

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Date:   Mon, 8 Mar 2021 08:31:03 +0100
From:   Pawel Laszczak <pawell@...ence.com>
To:     <peter.chen@...nel.org>
CC:     <gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kurahul@...ence.com>,
        <sparmar@...ence.com>, Pawel Laszczak <pawell@...ence.com>
Subject: [PATCH v2] usb: cdnsp: Fixes incorrect value in ISOC TRB

From: Pawel Laszczak <pawell@...ence.com>

Fixes issue with priority of operator. Operator "|" priority is
higher then "? :".
To improve the readability the operator "? :" has been replaced with
"if ()" statement.

Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver")
Signed-off-by: Pawel Laszczak <pawell@...ence.com>

---
Changelog:
v2:
- changed the commit log
- added separate "if" statement to improve readability

 drivers/usb/cdns3/cdnsp-ring.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/cdns3/cdnsp-ring.c b/drivers/usb/cdns3/cdnsp-ring.c
index e15e13ba27dc..b23f09a68427 100644
--- a/drivers/usb/cdns3/cdnsp-ring.c
+++ b/drivers/usb/cdns3/cdnsp-ring.c
@@ -2198,7 +2198,10 @@ static int cdnsp_queue_isoc_tx(struct cdnsp_device *pdev,
 	 * inverted in the first TDs isoc TRB.
 	 */
 	field = TRB_TYPE(TRB_ISOC) | TRB_TLBPC(last_burst_pkt) |
-		start_cycle ? 0 : 1 | TRB_SIA | TRB_TBC(burst_count);
+		TRB_SIA | TRB_TBC(burst_count);
+
+	if (!start_cycle)
+		field |= TRB_CYCLE;
 
 	/* Fill the rest of the TRB fields, and remaining normal TRBs. */
 	for (i = 0; i < trbs_per_td; i++) {
-- 
2.25.1