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iio: adc: vf610: Fix buffer alignment in iio_push_to_buffers_with_timestamp()

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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 uses of
iio_push_to_buffers_with_timestamp()

Fixes: 0010d6b444 ("iio: adc: vf610: Add IIO buffer support for Vybrid ADC")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Stefan-Gabriel Mirea <stefan-gabriel.mirea@nxp.com>
Cc: Sanchayan Maity <maitysanchayan@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-10-jic23@kernel.org
This commit is contained in:
Jonathan Cameron 2021-05-01 18:01:11 +01:00
parent d85d71dd1a
commit 7765dfaa22
1 changed files with 7 additions and 3 deletions
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10
drivers/iio/adc/vf610_adc.c
View file

@ -167,7 +167,11 @@ struct vf610_adc {
u32 sample_freq_avail[5];
struct completion completion;
u16 buffer[8];
/* Ensure the timestamp is naturally aligned */
struct {
u16 chan;
s64 timestamp __aligned(8);
} scan;
};
static const u32 vf610_hw_avgs[] = { 1, 4, 8, 16, 32 };
@ -579,9 +583,9 @@ static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
if (coco & VF610_ADC_HS_COCO0) {
info->value = vf610_adc_read_data(info);
if (iio_buffer_enabled(indio_dev)) {
info->buffer[0] = info->value;
info->scan.chan = info->value;
iio_push_to_buffers_with_timestamp(indio_dev,
info->buffer,
&info->scan,
iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
} else