iio:adc:ti_am335x_adc Fix buffered mode by identifying as software buffer.

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commit 9d0be85d4e upstream.

Whilst this part has a hardware buffer, the identifcation that IIO cares
about is the userspace facing end.  It this case we push individual elements
from the hardware fifo into the software interface (specifically a kfifo)
rather than providing direct reads through to a hardware buffer
(as we still do in the sca3000 for example).

Technically the original specification as a hardware buffer could be
considered wrong, but it didn't matter until the patch listed below.

Result is that any attempt to enable the buffer will return -EINVAL

Fixes: 225d59adf1 ("iio: Specify supported modes for buffers")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jonathan Cameron 2016-01-01 18:05:34 +00:00 • committed by Greg Kroah-Hartman

parent dc275a6eb9

commit e9b0f0e411

1 changed files with 1 additions and 1 deletions

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drivers/iio/adc/ti_am335x_adc.c

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