Re: [PATCH] iio: common: ssp_sensors: Fix uninitialized warning for timestamp
From: Karol Wrona
Date: Fri Apr 24 2015 - 07:10:28 EST
On 04/18/2015 09:02 PM, Jonathan Cameron wrote:
> On 16/04/15 10:30, Karol Wrona wrote:
>> calculated_time variable caused warning as uninitialized. It was not harmful
>> because it was evaluated in the path in which was used later but it is to
>> satisfy the checkers.
>> Signed-off-by: Karol Wrona <k.wrona@xxxxxxxxxxx>
> Dumb compiler. It's a false positive and as the function is an inline in the header,
> it should be able to tell.
> What compiler is spitting out the warning?
You should have krobot complain in the mail.
Subject: "include/linux/iio/buffer.h:142:32: warning: 'calculated_time'
may be used uninitialized in this function"
This was sh compiler. I suppose that we can treat it as false warning.
It will complain whenever the variable will stay uninitialized even if
not used in such path.
>> drivers/iio/common/ssp_sensors/ssp_iio.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>> diff --git a/drivers/iio/common/ssp_sensors/ssp_iio.c b/drivers/iio/common/ssp_sensors/ssp_iio.c
>> index a3ae165..16180e6 100644
>> --- a/drivers/iio/common/ssp_sensors/ssp_iio.c
>> +++ b/drivers/iio/common/ssp_sensors/ssp_iio.c
>> @@ -80,7 +80,7 @@ int ssp_common_process_data(struct iio_dev *indio_dev, void *buf,
>> unsigned int len, int64_t timestamp)
>> __le32 time;
>> - int64_t calculated_time;
>> + int64_t calculated_time = 0;
>> struct ssp_sensor_data *spd = iio_priv(indio_dev);
>> if (indio_dev->scan_bytes == 0)
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