Hi! > From: Rob Herring <r...@kernel.org> > > This adds library functions for serdev based BT drivers. This is largely > copied from hci_ldisc.c and modified to use serdev calls. There's a little > bit of duplication, but I avoided intermixing this as the ldisc code should > eventually go away. > > Signed-off-by: Rob Herring <r...@kernel.org> > Cc: Marcel Holtmann <mar...@holtmann.org> > Cc: Gustavo Padovan <gust...@padovan.org> > Cc: Johan Hedberg <johan.hedb...@gmail.com> > Cc: linux-blueto...@vger.kernel.org > Tested-By: Sebastian Reichel <s...@kernel.org>
Trivial comments below.
> @@ -0,0 +1,370 @@
> +/*
> + *
> + * Bluetooth HCI serdev driver lib
Just one empty line.
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
> + *
> + */
I don't think we put the address in there any more.
> +static void hci_uart_write_work(struct work_struct *work)
> +{
> + struct hci_uart *hu = container_of(work, struct hci_uart, write_work);
> + struct serdev_device *serdev = hu->serdev;
> + struct hci_dev *hdev = hu->hdev;
> + struct sk_buff *skb;
> +
> + /* REVISIT: should we cope with bad skbs or ->write() returning
> + * and error value ?
> + */
"an error value"? Comment style?
> +restart:
> + clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
> +
> + while ((skb = hci_uart_dequeue(hu))) {
> + int len;
> +
> + len = serdev_device_write_buf(serdev, skb->data, skb->len);
> + hdev->stat.byte_tx += len;
> +
> + skb_pull(skb, len);
> + if (skb->len) {
> + hu->tx_skb = skb;
> + break;
> + }
> +
> + hci_uart_tx_complete(hu, hci_skb_pkt_type(skb));
> + kfree_skb(skb);
> + }
> +
> + if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state))
> + goto restart;
do {} while () instead of goto?
> +/* ------- Interface to HCI layer ------ */
> +/* Initialize device */
Comment style?
> + if (hu->proto->set_baudrate && speed) {
> + err = hu->proto->set_baudrate(hu, speed);
> + if (!err)
> + serdev_device_set_baudrate(hu->serdev, speed);
> + }
Complain about the error here?
> + if (skb->len != sizeof(*ver)) {
> + BT_ERR("%s: Event length mismatch for version information",
> + hdev->name);
> + goto done;
> + }
> +
> +done:
Get rid of goto and label?
> +/* hci_uart_write_wakeup()
> + *
> + * Callback for transmit wakeup. Called when low level
> + * device driver can accept more send data.
> + *
> + * Arguments: tty pointer to associated tty instance data
> + * Return Value: None
> + */
Kerneldoc? :-)
> +static void hci_uart_write_wakeup(struct serdev_device *serdev)
> +{
> + struct hci_uart *hu = serdev_device_get_drvdata(serdev);
> +
> + BT_DBG("");
> +
> + if (!hu)
> + return;
> +
> + if (serdev != hu->serdev)
> + return;
WARN_ON on both of these? That should not be normal condition...
> + /* Only when vendor specific setup callback is provided, consider
> + * the manufacturer information valid. This avoids filling in the
> + * value for Ericsson when nothing is specified.
> + */
Is this comment still up-to-date?
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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