From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759250AbcLUNnR (ORCPT ); Wed, 21 Dec 2016 08:43:17 -0500 Received: from nblzone-211-213.nblnetworks.fi ([83.145.211.213]:39760 "EHLO hillosipuli.retiisi.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758962AbcLUNnO (ORCPT ); Wed, 21 Dec 2016 08:43:14 -0500 Date: Wed, 21 Dec 2016 15:42:36 +0200 From: Sakari Ailus To: Pavel Machek Cc: ivo.g.dimitrov.75@gmail.com, sre@kernel.org, pali.rohar@gmail.com, linux-media@vger.kernel.org, galak@codeaurora.org, mchehab@osg.samsung.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5] media: Driver for Toshiba et8ek8 5MP sensor Message-ID: <20161221134235.GH16630@valkosipuli.retiisi.org.uk> References: <20161023200355.GA5391@amd> <20161119232943.GF13965@valkosipuli.retiisi.org.uk> <20161214122451.GB27011@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161214122451.GB27011@amd> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Pavel, Thanks for the update. On Wed, Dec 14, 2016 at 01:24:51PM +0100, Pavel Machek wrote: ... > +static int et8ek8_set_ctrl(struct v4l2_ctrl *ctrl) > +{ > + struct et8ek8_sensor *sensor = > + container_of(ctrl->handler, struct et8ek8_sensor, ctrl_handler); > + > + switch (ctrl->id) { > + case V4L2_CID_GAIN: > + return et8ek8_set_gain(sensor, ctrl->val); > + > + case V4L2_CID_EXPOSURE: > + { > + int rows; > + struct i2c_client *client = v4l2_get_subdevdata(&sensor->subdev); > + rows = ctrl->val; > + return et8ek8_i2c_write_reg(client, ET8EK8_REG_16BIT, 0x1243, > + swab16(rows)); Why swab16()? Doesn't the et8ek8_i2c_write_reg() already do the right thing? 16-bit writes aren't used elsewhere... and the register address and value seem to have different endianness there, it looks like a bug to me in that function. -- Regards, Sakari Ailus e-mail: sakari.ailus@iki.fi XMPP: sailus@retiisi.org.uk