linux-kernel - [PATCH v2 06/14] iio: sx9310: Fixes various memory handling

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Date:   Tue, 28 Jul 2020 17:05:12 -0600
From:   Daniel Campello <campello@...omium.org>
To:     LKML <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Daniel Campello <campello@...omium.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Douglas Anderson <dianders@...omium.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Stephen Boyd <swboyd@...omium.org>, linux-iio@...r.kernel.org
Subject: [PATCH v2 06/14] iio: sx9310: Fixes various memory handling

Makes use __aligned(8) to ensure that the timestamp is correctly aligned
when we call io_push_to_buffers_with_timestamp().
Also makes use of sizeof() for regmap_bulk_read instead of static value.

Signed-off-by: Daniel Campello <campello@...omium.org>
---

Changes in v2:
 - Fixed commit message from "iio: sx9310: Align memory"

 drivers/iio/proximity/sx9310.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
index bb007673f758d5..75e85dcd6b3572 100644
--- a/drivers/iio/proximity/sx9310.c
+++ b/drivers/iio/proximity/sx9310.c
@@ -132,8 +132,8 @@ struct sx9310_data {
 	 */
 	bool prox_stat[SX9310_NUM_CHANNELS];
 	bool trigger_enabled;
-	__be16 buffer[SX9310_NUM_CHANNELS +
-		      4]; /* 64-bit data + 64-bit timestamp */
+	/* 64-bit data + 64-bit timestamp buffer */
+	__be16 buffer[SX9310_NUM_CHANNELS + 4] __aligned(8);
 	/* Remember enabled channels and sample rate during suspend. */
 	unsigned int suspend_ctrl0;
 	struct completion completion;
@@ -340,7 +340,7 @@ static int sx9310_read_prox_data(struct sx9310_data *data,
 	if (ret < 0)
 		return ret;
 
-	return regmap_bulk_read(data->regmap, chan->address, val, 2);
+	return regmap_bulk_read(data->regmap, chan->address, val, sizeof(*val));
 }
 
 /*
-- 
2.28.0.163.g6104cc2f0b6-goog