| commit | 9d0be85d4e2cfa2519ae16efe7ff4a7150c43c0b | |
| author | Jonathan Cameron <jic23@kernel.org> | |
| Fri, 1 Jan 2016 18:05:34 +0000 (1 18:05 +0000) | ||
| committer | Jonathan Cameron <jic23@kernel.org> | |
| Sat, 16 Jan 2016 13:06:33 +0000 (16 13:06 +0000) | ||
| tree | 2954d7e4f5c3aec4eb83b26ef27e5f7e72052feb | treesnapshot (tar.gz zip) |
| parent | fa34e6dd44d7c02c8a8468ce4a52a7506f907bef | commitdiff |
iio:adc:ti_am335x_adc Fix buffered mode by identifying as software buffer.
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: 225d59adf1c8 ("iio: Specify supported modes for buffers")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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: 225d59adf1c8 ("iio: Specify supported modes for buffers")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| drivers/iio/adc/ti_am335x_adc.c | diffblobblamehistory |