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由 Thomas Betker 提交于
The VREFN channel is bipolar, not unipolar. Small negative values do occur (e.g., -1mV), and unsigned conversion maps them incorrectly to large positive values (about +1V), so fix this. Signed-off-by: NThomas Betker <thomas.betker@rohde-schwarz.com> Cc: <Stable@vger.kernel.org> Signed-off-by: NJonathan Cameron <jic23@kernel.org>
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