From: "Ahmed S. Darwish" <darwish.07@gmail.com> To: Marc Kleine-Budde <mkl@pengutronix.de> Cc: Olivier Sobrie <olivier@sobrie.be>, Oliver Hartkopp <socketcan@hartkopp.net>, Wolfgang Grandegger <wg@grandegger.com>, "David S. Miller" <davem@davemloft.net>, Paul Gortmaker <paul.gortmaker@windriver.com>, Linux-CAN <linux-can@vger.kernel.org>, netdev <netdev@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org> Subject: Re: [PATCH v4 3/4] can: kvaser_usb: Add support for the Usbcan-II family Date: Mon, 12 Jan 2015 07:07:41 -0500 Message-ID: <20150112120741.GC9213@linux> (raw) In-Reply-To: <54B3B37C.7090002@pengutronix.de> Hi Marc, On Mon, Jan 12, 2015 at 12:43:56PM +0100, Marc Kleine-Budde wrote: > On 01/11/2015 09:36 PM, Ahmed S. Darwish wrote: [...] > > diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c > > index 0eb870b..da47d17 100644 > > --- a/drivers/net/can/usb/kvaser_usb.c > > +++ b/drivers/net/can/usb/kvaser_usb.c > > @@ -6,10 +6,12 @@ > > * Parts of this driver are based on the following: > > * - Kvaser linux leaf driver (version 4.78) > > * - CAN driver for esd CAN-USB/2 > > + * - Kvaser linux usbcanII driver (version 5.3) > > * > > * Copyright (C) 2002-2006 KVASER AB, Sweden. All rights reserved. > > * Copyright (C) 2010 Matthias Fuchs <matthias.fuchs@esd.eu>, esd gmbh > > * Copyright (C) 2012 Olivier Sobrie <olivier@sobrie.be> > > + * Copyright (C) 2015 Valeo Corporation > > */ > > > > #include <linux/completion.h> > > @@ -21,6 +23,15 @@ > > #include <linux/can/dev.h> > > #include <linux/can/error.h> > > > > +/* Kvaser USB CAN dongles are divided into two major families: > > + * - Leaf: Based on Renesas M32C, running firmware labeled as 'filo' > > + * - UsbcanII: Based on Renesas M16C, running firmware labeled as 'helios' > > + */ > > +enum kvaser_usb_family { > > + KVASER_LEAF, > > + KVASER_USBCAN, > > +}; > > Nitpick: please move after the #defines > Will do. [...] > > @@ -616,53 +810,24 @@ static void kvaser_usb_unlink_tx_urbs(struct kvaser_usb_net_priv *priv) > > } > > > > static void kvaser_usb_rx_error(const struct kvaser_usb *dev, > > - const struct kvaser_msg *msg) > > + struct kvaser_error_summary *es) > > Can you make "struct kvaser_error_summary *es" const? > Sure. [...] > > +/* For USBCAN, report error to userspace iff the channels's errors counter > > + * has increased, or we're the only channel seeing a bus error state. > > + */ > > +static void kvaser_usbcan_conditionally_rx_error(const struct kvaser_usb *dev, > > + struct kvaser_error_summary *es) > > const struct kvaser_error_summary *es? > Ditto. [...] > > + > > + /* The USBCAN firmware does not support more than 2 channels. > > Does USBCAN support always 2 channels or are there models with 1 > channels, too. I'd rephrase ..."does support up to 2 channels." > Yup, that will be more accurate. [...] > > + > > + switch (dev->family) { > > + case KVASER_LEAF: > > + rx_msg = msg->u.leaf.rx_can.msg; > > + break; > > + case KVASER_USBCAN: > > + rx_msg = msg->u.usbcan.rx_can.msg; > > + break; > > + default: > > + dev_err(dev->udev->dev.parent, > > + "Invalid device family (%d)\n", dev->family); > > return; > > should not happen. > Yes, but otherwise I get GCC warnings of 'rx_msg' possibly being unused. I can add __maybe_unused to rx_msg of course, but such annotation may hide possible errors in the future. > > + switch (dev->family) { > > + case KVASER_LEAF: > > + msg_tx_can_flags = &msg->u.tx_can.leaf.flags; > > + break; > > + case KVASER_USBCAN: > > + msg_tx_can_flags = &msg->u.tx_can.usbcan.flags; > > + break; > > + default: > > + dev_err(dev->udev->dev.parent, > > + "Invalid device family (%d)\n", dev->family); > > + goto releasebuf; > should not happen, please remove Like the 'rx_msg' case above. Thanks, Darwish
next prev parent reply index Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-12-23 15:46 [PATCH] can: kvaser_usb: Don't free packets when tight on URBs Ahmed S. Darwish 2014-12-23 15:53 ` [PATCH] can: kvaser_usb: Add support for the Usbcan-II family Ahmed S. Darwish 2014-12-24 12:36 ` Olivier Sobrie 2014-12-24 15:04 ` Ahmed S. Darwish 2014-12-28 21:51 ` Olivier Sobrie 2014-12-30 15:33 ` Ahmed S. Darwish 2014-12-31 12:13 ` Olivier Sobrie 2014-12-24 12:31 ` [PATCH] can: kvaser_usb: Don't free packets when tight on URBs Olivier Sobrie 2014-12-24 15:52 ` Ahmed S. Darwish 2014-12-24 23:56 ` [PATCH v2 1/4] " Ahmed S. Darwish 2014-12-24 23:59 ` [PATCH v2 2/4] can: kvaser_usb: Reset all URB tx contexts upon channel close Ahmed S. Darwish 2014-12-25 0:02 ` [PATCH v2 3/4] can: kvaser_usb: Don't send a RESET_CHIP for non-existing channels Ahmed S. Darwish 2014-12-25 0:04 ` [PATCH v2 4/4] can: kvaser_usb: Add support for the Usbcan-II family Ahmed S. Darwish 2014-12-28 21:54 ` [PATCH v2 3/4] can: kvaser_usb: Don't send a RESET_CHIP for non-existing channels Olivier Sobrie 2014-12-25 2:50 ` [PATCH v2 1/4] can: kvaser_usb: Don't free packets when tight on URBs Greg KH 2014-12-25 9:38 ` Ahmed S. Darwish 2014-12-28 21:52 ` Olivier Sobrie 2015-01-01 21:59 ` [PATCH] " Stephen Hemminger 2015-01-03 14:34 ` Ahmed S. Darwish 2015-01-05 17:49 ` [PATCH v3 1/4] " Ahmed S. Darwish 2015-01-05 17:52 ` [PATCH v3 2/4] can: kvaser_usb: Reset all URB tx contexts upon channel close Ahmed S. Darwish 2015-01-05 17:57 ` [PATCH v3 3/4] can: kvaser_usb: Don't send a RESET_CHIP for non-existing channels Ahmed S. Darwish 2015-01-05 18:31 ` [PATCH v3 4/4] can: kvaser_usb: Add support for the Usbcan-II family Ahmed S. Darwish 2015-01-08 11:53 ` Marc Kleine-Budde 2015-01-08 15:19 ` Ahmed S. Darwish 2015-01-12 11:51 ` Marc Kleine-Budde 2015-01-12 12:26 ` Ahmed S. Darwish 2015-01-12 12:34 ` Marc Kleine-Budde 2015-01-09 3:06 ` Ahmed S. Darwish 2015-01-09 14:05 ` Marc Kleine-Budde 2015-01-08 9:59 ` [PATCH v3 1/4] can: kvaser_usb: Don't free packets when tight on URBs Marc Kleine-Budde 2015-01-11 20:05 ` [PATCH v4 00/04] can: Introduce support for Kvaser USBCAN-II devices Ahmed S. Darwish 2015-01-11 20:11 ` [PATCH v4 01/04] can: kvaser_usb: Don't dereference skb after a netif_rx() devices Ahmed S. Darwish 2015-01-11 20:15 ` [PATCH v4 2/4] can: kvaser_usb: Update error counters before exiting on OOM Ahmed S. Darwish 2015-01-11 20:36 ` [PATCH v4 3/4] can: kvaser_usb: Add support for the Usbcan-II family Ahmed S. Darwish 2015-01-11 20:45 ` [PATCH v4 4/4] can: kvaser_usb: Retry first bulk transfer on -ETIMEDOUT Ahmed S. Darwish 2015-01-11 20:51 ` Marc Kleine-Budde 2015-01-12 10:14 ` Ahmed S. Darwish 2015-01-12 10:25 ` Marc Kleine-Budde 2015-01-12 13:33 ` Olivier Sobrie 2015-01-12 13:50 ` Ahmed S. Darwish 2015-01-12 11:20 ` [PATCH v4 3/4] can: kvaser_usb: Add support for the Usbcan-II family Ahmed S. Darwish 2015-01-12 11:43 ` Marc Kleine-Budde 2015-01-12 12:07 ` Ahmed S. Darwish [this message] 2015-01-12 12:36 ` Ahmed S. Darwish 2015-01-12 13:53 ` Olivier Sobrie 2015-01-18 20:12 ` Ahmed S. Darwish 2015-01-18 20:13 ` Marc Kleine-Budde 2015-01-12 11:09 ` [PATCH v4 2/4] can: kvaser_usb: Update error counters before exiting on OOM Marc Kleine-Budde 2015-01-12 20:36 ` Ahmed S. Darwish 2015-01-16 14:39 ` Marc Kleine-Budde 2015-01-11 20:49 ` [PATCH v4 01/04] can: kvaser_usb: Don't dereference skb after a netif_rx() Ahmed S. Darwish 2015-01-12 11:05 ` Marc Kleine-Budde 2015-01-20 21:44 ` [PATCH v5 1/5] can: kvaser_usb: Update net interface state before exiting on OOM Ahmed S. Darwish 2015-01-20 21:45 ` [PATCH v5 2/5] can: kvaser_usb: Consolidate and unify state change handling Ahmed S. Darwish 2015-01-20 21:47 ` [PATCH v5 3/5] can: kvaser_usb: Fix state handling upon BUS_ERROR events Ahmed S. Darwish 2015-01-20 21:48 ` [PATCH v5 4/5] can: kvaser_usb: Retry the first bulk transfer on -ETIMEDOUT Ahmed S. Darwish 2015-01-20 21:50 ` [PATCH v5 5/5] can: kvaser_usb: Add support for the USBcan-II family Ahmed S. Darwish 2015-01-21 12:24 ` [PATCH v5 4/5] can: kvaser_usb: Retry the first bulk transfer on -ETIMEDOUT Sergei Shtylyov 2015-01-25 11:59 ` Ahmed S. Darwish 2015-01-21 10:33 ` [PATCH v5 2/5] can: kvaser_usb: Consolidate and unify state change handling Andri Yngvason 2015-01-21 10:44 ` Marc Kleine-Budde 2015-01-21 11:00 ` Andri Yngvason 2015-01-21 11:53 ` Wolfgang Grandegger 2015-01-21 14:43 ` Ahmed S. Darwish 2015-01-21 15:00 ` Andri Yngvason 2015-01-21 15:36 ` Ahmed S. Darwish 2015-01-21 16:13 ` Wolfgang Grandegger 2015-01-23 6:07 ` Ahmed S. Darwish 2015-01-23 10:32 ` Andri Yngvason 2015-01-25 2:43 ` Ahmed S. Darwish 2015-01-26 10:21 ` Andri Yngvason 2015-01-21 16:37 ` Andri Yngvason 2015-01-21 16:20 ` Andri Yngvason 2015-01-21 22:59 ` Marc Kleine-Budde 2015-01-22 10:14 ` Andri Yngvason 2015-01-25 2:49 ` Ahmed S. Darwish 2015-01-25 3:21 ` Ahmed S. Darwish 2015-01-26 5:17 ` [PATCH v6 0/7] can: kvaser_usb: Leaf bugfixes and USBCan-II support Ahmed S. Darwish 2015-01-26 5:20 ` [PATCH v6 1/7] can: kvaser_usb: Do not sleep in atomic context Ahmed S. Darwish 2015-01-26 5:22 ` [PATCH v6 2/7] can: kvaser_usb: Send correct context to URB completion Ahmed S. Darwish 2015-01-26 5:24 ` [PATCH v6 3/7] can: kvaser_usb: Retry the first bulk transfer on -ETIMEDOUT Ahmed S. Darwish 2015-01-26 5:25 ` [PATCH v6 4/7] can: kvaser_usb: Fix state handling upon BUS_ERROR events Ahmed S. Darwish 2015-01-26 5:27 ` [PATCH v6 5/7] can: kvaser_usb: Update interface state before exiting on OOM Ahmed S. Darwish 2015-01-26 5:29 ` [PATCH v6 6/7] can: kvaser_usb: Consolidate and unify state change handling Ahmed S. Darwish 2015-01-26 5:33 ` [PATCH v6 7/7] can: kvaser_usb: Add support for the USBcan-II family Ahmed S. Darwish 2015-01-26 10:34 ` Andri Yngvason 2015-01-26 10:26 ` [PATCH v6 6/7] can: kvaser_usb: Consolidate and unify state change handling Andri Yngvason 2015-01-26 10:28 ` [PATCH v6 5/7] can: kvaser_usb: Update interface state before exiting on OOM Andri Yngvason 2015-01-26 10:50 ` Marc Kleine-Budde 2015-01-26 10:52 ` Andri Yngvason 2015-01-26 10:53 ` Marc Kleine-Budde 2015-01-26 9:55 ` [PATCH v6 0/7] can: kvaser_usb: Leaf bugfixes and USBCan-II support Marc Kleine-Budde 2015-01-26 10:07 ` Marc Kleine-Budde 2015-01-26 10:56 ` Marc Kleine-Budde
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