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Input: ads7846 - fix unaligned access on 7845
[ Upstream commit03e2c9c782
] req->sample[1] is not naturally aligned at word boundary, and therefore we should use get_unaligned_be16() when accessing it. Fixes:3eac5c7e44
("Input: ads7846 - extend the driver for ads7845 controller support") Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -33,6 +33,7 @@
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#include <linux/regulator/consumer.h>
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#include <linux/module.h>
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#include <asm/irq.h>
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#include <asm/unaligned.h>
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/*
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* This code has been heavily tested on a Nokia 770, and lightly
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@ -435,7 +436,7 @@ static int ads7845_read12_ser(struct device *dev, unsigned command)
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if (status == 0) {
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/* BE12 value, then padding */
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status = be16_to_cpu(*((u16 *)&req->sample[1]));
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status = get_unaligned_be16(&req->sample[1]);
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status = status >> 3;
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status &= 0x0fff;
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}
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