From: Sakari Ailus <sakari.ailus@iki.fi>
To: Pavel Machek <pavel@ucw.cz>
Cc: Martin Kepplinger <martin.kepplinger@puri.sm>,
devicetree@vger.kernel.org, kernel@puri.sm,
krzysztof.kozlowski@canonical.com,
laurent.pinchart@ideasonboard.com, linux-kernel@vger.kernel.org,
linux-media@vger.kernel.org, mchehab@kernel.org,
paul.kocialkowski@bootlin.com, phone-devel@vger.kernel.org,
robh@kernel.org, shawnx.tu@intel.com
Subject: Re: [PATCH v8 3/4] media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera
Date: Mon, 6 Sep 2021 10:53:41 +0300 [thread overview]
Message-ID: <YTXJBYb2EzR9iIzx@valkosipuli.retiisi.eu> (raw)
In-Reply-To: <20210903161742.GD2209@bug>
Hi Pavel, Martin,
On Fri, Sep 03, 2021 at 06:17:43PM +0200, Pavel Machek wrote:
> > +static void hi846_write_reg_16(struct hi846 *hi846, u16 reg, u16 val, int *err)
> > +{
> > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
> > + u8 buf[6];
> > + int ret;
> > +
> > + if (*err < 0)
> > + return;
> > +
> > + put_unaligned_be16(reg, buf);
> > + put_unaligned_be32(val << 8 * 2, buf + 2);
>
> Is that obfuscated way of saying put_unaligned_be16(val, buf+2); buf[3] = 0; buf[4] = 0; ?
Good catch.
The buf should be only four u8's long, and you should use 16-bit variant
here, too.
Also the transfer should be done on sizeof(buf), not 4 (which indeed is the
same, but cleaner).
--
Regards,
Sakari Ailus
next prev parent reply other threads:[~2021-09-06 7:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-31 13:43 [PATCH v8 0/4] Add support for the Hynix Hi-846 camera Martin Kepplinger
2021-08-31 13:43 ` [PATCH v8 1/4] dt-bindings: vendor-prefixes: Add SK Hynix Inc Martin Kepplinger
2021-08-31 13:43 ` [PATCH v8 2/4] dt-bindings: media: document SK Hynix Hi-846 MIPI CSI-2 8M pixel sensor Martin Kepplinger
2021-08-31 13:43 ` [PATCH v8 3/4] media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera Martin Kepplinger
2021-09-03 16:17 ` Pavel Machek
2021-09-06 7:49 ` Martin Kepplinger
2021-09-06 7:53 ` Sakari Ailus [this message]
2021-08-31 13:43 ` [PATCH v8 4/4] Documentation: i2c-cardlist: add the Hynix hi846 sensor Martin Kepplinger
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