linux-kernel - Re: [PATCH] iio: st_pressure: st_accel: Initialise sensor platform data properly

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Date:   Mon, 24 Apr 2017 16:26:48 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Shrirang Bagul <shrirang.bagul@...onical.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        Gregor Boirie <gregor.boirie@...rot.com>, rob@...nel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Marcin Niestroj <m.niestroj@...nn-global.com>
Subject: Re: [PATCH] iio: st_pressure: st_accel: Initialise sensor platform
 data properly

On Wed, Apr 19, 2017 at 4:05 PM, Shrirang Bagul
<shrirang.bagul@...onical.com> wrote:

> This patch fixes the sensor platform data initialisation for st_pressure
> and st_accel device drivers. Without this patch, the driver fails to
> register the sensors when the user removes and re-loads the driver.
>
> 1. Unload the kernel modules for st_pressure
> $ sudo rmmod st_pressure_i2c
> $ sudo rmmod st_pressure
>
> 2. Re-load the driver
> $ sudo insmod st_pressure
> $ sudo insmod st_pressure_i2c
> --- OR ---
> $ sudo modprobe st_pressure_i2c
>
> dmesg errors:
>
> [ 160.935707] iio iio:device2: DRDY on pdata not valid.
> [ 160.941505] st-press-i2c: probe of i2c-SMO9210:00 failed with error -22
>
> The driver fails to register the pressure sensor device. Devices
> supported by st_accel driver also suffer from the same bug.
>
> Signed-off-by: Shrirang Bagul <shrirang.bagul@...onical.com>

Looks OK
Acked-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij