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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Guenter Roeck <linux@roeck-us.net>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	kernel test robot <lkp@intel.com>
Subject: [PATCH v2 1/1] usb: typec: wcove: Use LE to CPU conversion when accessing msg->header
Date: Wed,  9 Jun 2021 20:22:02 +0300	[thread overview]
Message-ID: <20210609172202.83377-1-andriy.shevchenko@linux.intel.com> (raw)

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@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: added Rb tag (Heikki), amend Fixes tags (Greg)
 drivers/usb/typec/tcpm/wcove.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/typec/tcpm/wcove.c b/drivers/usb/typec/tcpm/wcove.c
index 8072e222eb99..20917d85d6f4 100644
--- a/drivers/usb/typec/tcpm/wcove.c
+++ b/drivers/usb/typec/tcpm/wcove.c
@@ -378,7 +378,7 @@ static int wcove_pd_transmit(struct tcpc_dev *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)
-- 
2.30.2


             reply	other threads:[~2021-06-09 17:21 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-09 17:22 Andy Shevchenko [this message]
2021-06-09 17:46 ` [PATCH v2 1/1] usb: typec: wcove: Use LE to CPU conversion when accessing msg->header Guenter Roeck

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