From: Jonathan Cameron <jic23@kernel.org>
To: Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Alison Schofield <amsfield22@gmail.com>
Cc: knaack.h@gmx.de, lars@metafoo.de, linux-iio@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] iio: light: tcs3414: use iio helper function to guarantee direct mode
Date: Sat, 11 Jun 2016 16:56:36 +0100 [thread overview]
Message-ID: <25540d4e-4803-f1be-7dcc-086eb7708233@kernel.org> (raw)
In-Reply-To: <alpine.DEB.2.02.1606070723120.10952@pmeerw.net>
On 07/06/16 06:23, Peter Meerwald-Stadler wrote:
>
>> Replace the code that guarantees the device stays in direct mode
>> with iio_device_claim_direct_mode() which does same. This allows
>> removal of an unused lock in the device private global data.
>
> Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Applied, thanks.
Joanthan
>
>> Signed-off-by: Alison Schofield <amsfield22@gmail.com>
>> Cc: Daniel Baluta <daniel.baluta@gmail.com>
>> ---
>> drivers/iio/light/tcs3414.c | 12 +++++-------
>> 1 file changed, 5 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c
>> index f90f8c5..8a15fb5 100644
>> --- a/drivers/iio/light/tcs3414.c
>> +++ b/drivers/iio/light/tcs3414.c
>> @@ -53,7 +53,6 @@
>>
>> struct tcs3414_data {
>> struct i2c_client *client;
>> - struct mutex lock;
>> u8 control;
>> u8 gain;
>> u8 timing;
>> @@ -134,16 +133,16 @@ static int tcs3414_read_raw(struct iio_dev *indio_dev,
>>
>> switch (mask) {
>> case IIO_CHAN_INFO_RAW:
>> - if (iio_buffer_enabled(indio_dev))
>> - return -EBUSY;
>> - mutex_lock(&data->lock);
>> + ret = iio_device_claim_direct_mode(indio_dev);
>> + if (ret)
>> + return ret;
>> ret = tcs3414_req_data(data);
>> if (ret < 0) {
>> - mutex_unlock(&data->lock);
>> + iio_device_release_direct_mode(indio_dev);
>> return ret;
>> }
>> ret = i2c_smbus_read_word_data(data->client, chan->address);
>> - mutex_unlock(&data->lock);
>> + iio_device_release_direct_mode(indio_dev);
>> if (ret < 0)
>> return ret;
>> *val = ret;
>> @@ -288,7 +287,6 @@ static int tcs3414_probe(struct i2c_client *client,
>> data = iio_priv(indio_dev);
>> i2c_set_clientdata(client, indio_dev);
>> data->client = client;
>> - mutex_init(&data->lock);
>>
>> indio_dev->dev.parent = &client->dev;
>> indio_dev->info = &tcs3414_info;
>>
>
next prev parent reply other threads:[~2016-06-11 15:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-07 5:09 [PATCH] iio: light: tcs3414: use iio helper function to guarantee direct mode Alison Schofield
2016-06-07 5:23 ` Peter Meerwald-Stadler
2016-06-11 15:56 ` Jonathan Cameron [this message]
2016-06-11 16:07 ` Jonathan Cameron
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