linux-kernel - Re: [PATCH v2 2/2] tools: iio: print error message when buffer enable fails

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Date:	Sun, 2 Aug 2015 18:39:56 +0100
From:	Jonathan Cameron <jic23@...nel.org>
To:	Hartmut Knaack <knaack.h@....de>,
	Irina Tirdea <irina.tirdea@...el.com>,
	linux-iio@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] tools: iio: print error message when buffer enable
 fails

On 24/07/15 19:23, Hartmut Knaack wrote:
> Irina Tirdea schrieb am 24.07.2015 um 15:28:
>> Running generic_buffer without enabling any channel of the
>> sensor will fail without printing any error message.
>>
>> Add an error message that indicates buffer enable failed.
>>
>> Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
> Acked-by: Hartmut Knaack <knaack.h@....de>
Applied.

Thanks

Jonathan
>> ---
>>  tools/iio/generic_buffer.c | 5 ++++-
>>  1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/tools/iio/generic_buffer.c b/tools/iio/generic_buffer.c
>> index 32f389eb..9f7b85b 100644
>> --- a/tools/iio/generic_buffer.c
>> +++ b/tools/iio/generic_buffer.c
>> @@ -364,8 +364,11 @@ int main(int argc, char **argv)
>>  
>>  	/* Enable the buffer */
>>  	ret = write_sysfs_int("enable", buf_dir_name, 1);
>> -	if (ret < 0)
>> +	if (ret < 0) {
>> +		fprintf(stderr,
>> +			"Failed to enable buffer: %s\n", strerror(-ret));
>>  		goto error_free_buf_dir_name;
>> +	}
>>  
>>  	scan_size = size_from_channelarray(channels, num_channels);
>>  	data = malloc(scan_size * buf_len);
>>
> 
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