Cynerd commented on code in PR #17283:
URL: https://github.com/apache/nuttx/pull/17283#discussion_r2495076340
##########
drivers/can/can.c:
##########
@@ -964,6 +965,22 @@ static int can_ioctl(FAR struct file *filep, int cmd,
unsigned long arg)
}
break;
+ /* Set read watermark */
+
+ case CANIOC_SET_IWATERMARK:
+ {
+ reader->rxwatermark = *(FAR size_t *)arg;
Review Comment:
There is `init_can_reader` function that is used to initialize this
structure. It gets called from `can_open` and thus initialized to `SIZE_MAX`
every time when reader is created for the can file descriptor.
There is no change in default behavior. The default behavior is the same,
thanks to the default watermark being set to `SIZE_MAX`.
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