Gary-Hobson commented on a change in pull request #5736:
URL: https://github.com/apache/incubator-nuttx/pull/5736#discussion_r826597364
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File path: drivers/input/touchscreen_upper.c
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@@ -366,34 +350,40 @@ static int touch_poll(FAR struct file *filep,
void touch_event(FAR void *priv, FAR const struct touch_sample_s *sample)
{
FAR struct touch_upperhalf_s *upper = priv;
+ FAR struct touch_openpriv_s *openpriv;
int semcount;
if (nxsem_wait(&upper->exclsem) < 0)
{
return;
}
- circbuf_overwrite(&upper->buffer, sample,
- SIZEOF_TOUCH_SAMPLE_S(sample->npoints));
- touch_notify(upper, POLLIN);
- nxsem_get_value(&upper->buffersem, &semcount);
- if (semcount < 1)
+ list_for_every_entry(&upper->head, openpriv, struct touch_openpriv_s, node)
{
- nxsem_post(&upper->buffersem);
+ circbuf_overwrite(&openpriv->circbuf, sample,
+ SIZEOF_TOUCH_SAMPLE_S(sample->npoints));
+
+ nxsem_get_value(&openpriv->waitsem, &semcount);
+ if (semcount < 1)
Review comment:
We don't seem to need it.
When the semaphore count value is greater than zero and the buff is empty,
nxsem_wait will consume the count value in the cycle.
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