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authorMartin Blumenstingl <martin.blumenstingl@googlemail.com>2017-06-04 16:28:23 +0300
committerJonathan Cameron <jic23@kernel.org>2017-06-11 17:00:13 +0300
commit103a07d4278203d6299798cd74cdc4d209801cac (patch)
tree462b39551218c6aac93c12f7e521e28a076b596d /.gitattributes
parent1454e15bc28ba94aa5d6b31a83a42d5c03af2a6d (diff)
downloadlinux-103a07d4278203d6299798cd74cdc4d209801cac.tar.xz
iio: adc: meson-saradc: fix potential crash in meson_sar_adc_clear_fifo
meson_sar_adc_clear_fifo passes a 0 as value-pointer to regmap_read(). In case of the meson-saradc driver this ends up in regmap_mmio_read(), where the value-pointer is de-referenced unconditionally to assign the value which was read. Fix this by passing an actual pointer, even though all we want to do is to discard the value. As a side-effect this fixes a sparse warning ("Using plain integer as NULL pointer") as reported by Paolo Cretaro. Fixes: 3adbf3427330 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs") Reported-by: Paolo Cretaro <paolocretaro@gmail.com> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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