lkml.org 
[lkml]   [2014]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v5 0/4] iio: Add support for rotation from north
On 09/07/14 23:12, Reyad Attiyat wrote:
> Hey Srinivas,
>
> I did look into the panic you sent. I wasn't sure exactly what caused
> the NULL pointer.
> I tested it with out applying the last rotation from north patch, so
> no hid usages are found, my device only has rotation_from_north, and
> hid_parse_report() would return -EINVAL.
> I added another check to make sure a iio channel were set up, and
> return -EINVAL if not, but couldn't think of anything else.
>
> Could you test this version with dynamic debugging and see if it is
> finding any hid usage attributes.
> Any ideas what could cause this? I think I'm handling errors properly
> by returning what parse_report returns (-EINVAL or -ENOMEM) in probe
>
> Thanks,
> Reyad Attiyat
Just to confirm what you may suspect... I'm holding this series until
Srinivas and Reyad have confirmed the cause of Srinivas' panic.

Jonathan
>
> On Wed, Jul 9, 2014 at 2:45 PM, Srinivas Pandruvada
> <srinivas.pandruvada@linux.intel.com> wrote:
>> On 07/09/2014 12:30 PM, Reyad Attiyat wrote:
>>>
>>> This series of patches modifies magn-3d driver to handle the rotation
>>> from north usage. This is done by scanning the report and then building
>>> the iio arrays (vals and channels) dynamically.
>>>
>>> Changes from V4
>>> I use the address field of struct iio_chan_spec to hold the array index
>>> of the usage attribute. The scan_index field is generated when creating
>>> an iio channel.
>>>
>>> Reyad Attiyat (4):
>>> iio: Documentation: Add documentation for rotation from north sensor
>>> usage attributes
>>> iio: types: Added support for rotation from north usage attributes
>>> iio: hid-sensor-magn-3d: Scan for usage attributes before setting up
>>> iio channels
>>> iio: hid-sensor-magn-3d: Add support for rotation from north
>>>
>>> Documentation/ABI/testing/sysfs-bus-iio | 82 +++++++++++
>>> drivers/iio/industrialio-core.c | 4 +
>>> drivers/iio/magnetometer/hid-sensor-magn-3d.c | 199
>>> ++++++++++++++++++++------
>>> include/linux/iio/types.h | 4 +
>>> 4 files changed, 245 insertions(+), 44 deletions(-)
>>>
>> Did you get chance to look at the cause of panic?
>>
>> Thanks,
>> Srinivas
> --
> To unsubscribe from this list: send the line "unsubscribe linux-iio" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>



\
 
 \ /
  Last update: 2014-07-15 21:01    [W:0.556 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site