gustavonihei commented on a change in pull request #4130:
URL: https://github.com/apache/incubator-nuttx/pull/4130#discussion_r667916835
##########
File path: include/sys/poll.h
##########
@@ -74,6 +74,7 @@
#define POLLERR (0x08)
#define POLLHUP (0x10)
+#define POLLRDHUP (0x10)
Review comment:
`POLLRDHUP` and `POLLHUP` exist for different reasons, so it is not
right for them to be defined to the same value.
##########
File path: include/sys/poll.h
##########
@@ -74,6 +74,7 @@
#define POLLERR (0x08)
#define POLLHUP (0x10)
+#define POLLRDHUP (0x10)
Review comment:
Then I'd suggest to explicitly define it to POLLHUP value and explain
the reason for this (shutdown not implemented).
```suggestion
#define POLLRDHUP POLLHUP
```
It is very easy to overlook that **0x10** value without noticing that it
contains the same value as `POLLHUP`.
##########
File path: include/sys/poll.h
##########
@@ -74,6 +74,7 @@
#define POLLERR (0x08)
#define POLLHUP (0x10)
+#define POLLRDHUP (0x10)
Review comment:
Then I'd suggest to explicitly define it to POLLHUP value and explain
the reason for this (shutdown not implemented).
```suggestion
#define POLLRDHUP POLLHUP /* (Reason for it) */
```
It is very easy to overlook that **0x10** value without noticing that it
contains the same value as `POLLHUP`.
##########
File path: include/sys/poll.h
##########
@@ -74,6 +74,7 @@
#define POLLERR (0x08)
#define POLLHUP (0x10)
+#define POLLRDHUP (0x10)
Review comment:
Ok, at least leave them in a separate group, the same as those you
mentioned.
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