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| author |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-05-01 18:01:03 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-05-17 13:54:28 +0100 |
| commit | fc36da3131a747a9367a05caf06de19be1bcc972 (patch) | |
| tree | 9311d50ebd35f3ff5683cb497311cd28e059faba /drivers/iio/accel | |
| parent | iio: accel: mma8452: Balance runtime pm + use pm_runtime_resume_and_get() (diff) | |
| download | linux-dev-fc36da3131a747a9367a05caf06de19be1bcc972.tar.xz linux-dev-fc36da3131a747a9367a05caf06de19be1bcc972.zip | |
iio: accel: bma180: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Found during an audit of all calls of this function.
Fixes: b9a6a237ffc9 ("iio:bma180: Drop _update_scan_mode()")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-2-jic23@kernel.org
Diffstat (limited to 'drivers/iio/accel')
| -rw-r--r-- | drivers/iio/accel/bma180.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c index 68d91a70de03..71c76bbd81d4 100644 --- a/drivers/iio/accel/bma180.c +++ b/drivers/iio/accel/bma180.c @@ -162,7 +162,11 @@ struct bma180_data { int scale; int bw; bool pmode; - u8 buff[16]; /* 3x 16-bit + 8-bit + padding + timestamp */ + /* Ensure timestamp is naturally aligned */ + struct { + s16 chan[4]; + s64 timestamp __aligned(8); + } scan; }; enum bma180_chan { @@ -938,12 +942,12 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p) mutex_unlock(&data->mutex); goto err; } - ((s16 *)data->buff)[i++] = ret; + data->scan.chan[i++] = ret; } mutex_unlock(&data->mutex); - iio_push_to_buffers_with_timestamp(indio_dev, data->buff, time_ns); + iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, time_ns); err: iio_trigger_notify_done(indio_dev->trig); |