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

Greg KH greg at kroah.com
Thu Dec 8 20:18:41 UTC 2011

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.

Care to try again and be more careful in the future?


greg k-h

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