[PATCH 3/3] staging:iio: Fix scan mask update

Lars-Peter Clausen lars at metafoo.de
Fri Dec 9 09:49:45 UTC 2011

On 12/08/2011 09:18 PM, Greg KH wrote:
> On Thu, Dec 08, 2011 at 06:35:53PM +0100, Lars-Peter Clausen wrote:
>> When updating the scan mask we have to check the actual scan mask for if the
>> channel is already enabled, not the matching scan mask from the available
>> scan masks. The bit will already be set there and as a result the actual
>> scan mask will not get updated and the channel stays disabled.
>> Also fix the return value of iio_scan_el_store which would return 1 instead of
>> the number of bytes written if the channel was already active in the scan mask.
> You just added a complier warning with this patch:
>   CC [M]  drivers/staging/iio/industrialio-buffer.o
> drivers/staging/iio/industrialio-buffer.c: In function ‘iio_scan_mask_query’:
> drivers/staging/iio/industrialio-buffer.c:621:8: warning: unused variable ‘mask’ [-Wunused-variable]
> So I didn't apply it.

Actually you did. At least it is in staging-next. Should I resend a updated
patch or just a patch removing the now unused mask variable.

- Lars

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