linux-kernel - [PATCH 5.4 52/84] usb: typec: wcove: Use LE to CPU conversion when accessing msg->header

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Date:   Mon, 14 Jun 2021 12:27:30 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH 5.4 52/84] usb: typec: wcove: Use LE to CPU conversion when accessing msg->header

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

commit d5ab95da2a41567440097c277c5771ad13928dad upstream.

As LKP noticed the Sparse is not happy about strict type handling:
   .../typec/tcpm/wcove.c:380:50: sparse:     expected unsigned short [usertype] header
   .../typec/tcpm/wcove.c:380:50: sparse:     got restricted __le16 const [usertype] header

Fix this by switching to use pd_header_cnt_le() instead of pd_header_cnt()
in the affected code.

Fixes: ae8a2ca8a221 ("usb: typec: Group all TCPCI/TCPM code together")
Fixes: 3c4fb9f16921 ("usb: typec: wcove: start using tcpm for USB PD support")
Reported-by: kernel test robot <lkp@...el.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Reviewed-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Link: https://lore.kernel.org/r/20210609172202.83377-1-andriy.shevchenko@linux.intel.com
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/typec/tcpm/wcove.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/typec/tcpm/wcove.c
+++ b/drivers/usb/typec/tcpm/wcove.c
@@ -377,7 +377,7 @@ static int wcove_pd_transmit(struct tcpc
 		const u8 *data = (void *)msg;
 		int i;
 
-		for (i = 0; i < pd_header_cnt(msg->header) * 4 + 2; i++) {
+		for (i = 0; i < pd_header_cnt_le(msg->header) * 4 + 2; i++) {
 			ret = regmap_write(wcove->regmap, USBC_TX_DATA + i,
 					   data[i]);
 			if (ret)