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From: "Ahmed S. Darwish" <darwish.07@gmail.com>
To: Olivier Sobrie <olivier@sobrie.be>,
Oliver Hartkopp <socketcan@hartkopp.net>,
Wolfgang Grandegger <wg@grandegger.com>,
Marc Kleine-Budde <mkl@pengutronix.de>,
Andri Yngvason <andri.yngvason@marel.com>
Cc: Linux-CAN <linux-can@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH v5 2/2] can: kvaser_usb: Fix sparse warning __le16 degrades to integer
Date: Sun, 15 Mar 2015 11:10:49 -0400 [thread overview]
Message-ID: <20150315151049.GB4492@linux> (raw)
In-Reply-To: <20150315150338.GA4492@linux>
From: Ahmed S. Darwish <ahmed.darwish@valeo.com>
USB endpoint's wMaxPacketSize field is an le16 entity. Use
appropriate le16_to_cpu macros to maintain endian independence.
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ahmed S. Darwish <ahmed.darwish@valeo.com>
---
drivers/net/can/usb/kvaser_usb.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
I wasn't successful in making sparse trigger the warning, even
while using the latest version from the git repos and doing:
make C=2 M=drivers/net/can/usb
So, Marc, I hope this patch fixes the issue reported; it should.
thanks,
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
index 60eadf5..d924016 100644
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -596,8 +596,8 @@ static int kvaser_usb_wait_msg(const struct kvaser_usb *dev, u8 id,
* for further details.
*/
if (tmp->len == 0) {
- pos = round_up(pos,
- dev->bulk_in->wMaxPacketSize);
+ pos = round_up(pos, le16_to_cpu(dev->bulk_in->
+ wMaxPacketSize));
continue;
}
@@ -1337,7 +1337,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb)
* number of events in case of a heavy rx load on the bus.
*/
if (msg->len == 0) {
- pos = round_up(pos, dev->bulk_in->wMaxPacketSize);
+ pos = round_up(pos, le16_to_cpu(dev->bulk_in->
+ wMaxPacketSize));
continue;
}
--
1.9.1
next prev parent reply other threads:[~2015-03-15 15:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-26 15:20 [PATCH 1/5] can: kvaser_usb: Avoid double free on URB submission failures Ahmed S. Darwish
2015-02-26 15:22 ` [PATCH 2/5] can: kvaser_usb: Read all messages in a bulk-in URB buffer Ahmed S. Darwish
2015-02-26 15:24 ` [PATCH 3/5] can: kvaser_usb: Utilize all possible tx URBs Ahmed S. Darwish
2015-02-26 15:25 ` [PATCH 4/5] can: kvaser_usb: Use can-dev unregistration mechanism Ahmed S. Darwish
2015-02-26 15:29 ` [PATCH 5/5] can: kvaser_usb: Fix tx queue start/stop race conditions Ahmed S. Darwish
2015-03-14 14:26 ` [PATCH 2/5] can: kvaser_usb: Read all messages in a bulk-in URB buffer Marc Kleine-Budde
2015-03-04 9:15 ` [PATCH 1/5] can: kvaser_usb: Avoid double free on URB submission failures Marc Kleine-Budde
2015-03-09 12:32 ` Ahmed S. Darwish
2015-03-09 12:56 ` Marc Kleine-Budde
2015-03-11 15:23 ` [PATCH v2 1/3] can: kvaser_usb: Fix tx queue start/stop race conditions Ahmed S. Darwish
2015-03-11 15:28 ` [PATCH v2 2/3] can: kvaser_usb: Utilize all possible tx URBs Ahmed S. Darwish
2015-03-11 15:30 ` [PATCH v2 3/3] can: kvaser_usb: Use can-dev unregistration mechanism Ahmed S. Darwish
2015-03-11 15:36 ` [PATCH v2 1/3] can: kvaser_usb: Fix tx queue start/stop race conditions Marc Kleine-Budde
2015-03-11 15:57 ` Ahmed S. Darwish
2015-03-11 17:37 ` [PATCH v3 " Ahmed S. Darwish
2015-03-11 17:39 ` [PATCH v3 2/3] can: kvaser_usb: Utilize all possible tx URBs Ahmed S. Darwish
2015-03-11 17:39 ` [PATCH v3 3/3] can: kvaser_usb: Use can-dev unregistration mechanism Ahmed S. Darwish
2015-03-11 21:53 ` [PATCH v3 2/3] can: kvaser_usb: Utilize all possible tx URBs Marc Kleine-Budde
2015-03-12 10:52 ` Ahmed S. Darwish
2015-03-12 11:29 ` Marc Kleine-Budde
2015-03-11 21:43 ` [PATCH v3 1/3] can: kvaser_usb: Fix tx queue start/stop race conditions Marc Kleine-Budde
2015-03-12 19:30 ` Ahmed S. Darwish
2015-03-14 13:02 ` [PATCH v4 " Ahmed S. Darwish
2015-03-14 13:09 ` [PATCH v4 2/3] can: kvaser_usb: Utilize all possible tx URBs Ahmed S. Darwish
2015-03-14 13:11 ` [PATCH v4 3/3] can: kvaser_usb: Use can-dev unregistration mechanism Ahmed S. Darwish
2015-03-14 15:26 ` Marc Kleine-Budde
2015-03-14 15:41 ` Ahmed S. Darwish
2015-03-14 15:55 ` Marc Kleine-Budde
2015-03-14 16:06 ` Ahmed S. Darwish
2015-03-14 13:41 ` [PATCH v4 1/3] can: kvaser_usb: Fix tx queue start/stop race conditions Marc Kleine-Budde
2015-03-14 14:38 ` Ahmed S. Darwish
2015-03-14 14:58 ` Marc Kleine-Budde
2015-03-14 15:19 ` Ahmed S. Darwish
2015-03-15 15:03 ` [PATCH v5 1/2] can: kvaser_usb: Comply with firmware max tx URBs value Ahmed S. Darwish
2015-03-15 15:10 ` Ahmed S. Darwish [this message]
2015-03-15 18:08 ` Marc Kleine-Budde
2015-03-16 12:16 ` Ahmed S. Darwish
2015-03-16 12:56 ` Marc Kleine-Budde
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