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iio: light: st_uvis25: Use iio_push_to_buffers_with_ts() to allow source size runtime check 

Use iio_push_to_buffers_with_ts() to allow source size runtime check.

Also move the structure used as the source to the stack as it is only 16
bytes and not the target of an DMA or similar.

Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20250802164436.515988-12-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
pull/1354/merge
Jonathan Cameron 2025-08-02 17:44:31 +01:00
parent 596081d33b
commit cb8453db63
2 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/iio/light/st_uvis25.h
View File

@ -27,11 +27,6 @@ struct st_uvis25_hw {
struct iio_trigger *trig;
bool enabled;
int irq;
/* Ensure timestamp is naturally aligned */
struct {
u8 chan;
aligned_s64 ts;
} scan;
};
extern const struct dev_pm_ops st_uvis25_pm_ops;

12
drivers/iio/light/st_uvis25_core.c
View File

@ -234,15 +234,21 @@ static irqreturn_t st_uvis25_buffer_handler_thread(int irq, void *p)
struct st_uvis25_hw *hw = iio_priv(iio_dev);
unsigned int val;
int err;
/* Ensure timestamp is naturally aligned */
struct {
u8 chan;
aligned_s64 ts;
} scan = { };
err = regmap_read(hw->regmap, ST_UVIS25_REG_OUT_ADDR, &val);
if (err < 0)
goto out;
hw->scan.chan = val;
scan.chan = val;
iio_push_to_buffers_with_timestamp(iio_dev, &hw->scan,
iio_get_time_ns(iio_dev));
iio_push_to_buffers_with_ts(iio_dev, &scan, sizeof(scan),
iio_get_time_ns(iio_dev));
out:
iio_trigger_notify_done(hw->trig);