diff options
| author | Jagan Teki <jagan@amarulasolutions.com> | 2020-05-02 12:45:01 +0530 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2020-05-11 01:30:49 +0530 |
| commit | 54232474d6fe9214942b79fa2608c3ad1d9f07d0 (patch) | |
| tree | 0586dcd3c47b15d144ffc3dc0419e0347cdc2e3c /include/linux | |
| parent | d7c56616dcc8cac6f5de8e605fd00486a59fef50 (diff) | |
iopoll: Add read_poll_timeout common API
Add read_poll_timeout common API similar to Linux iopoll.
readx_poll_timeout will trigger read_poll_timeout with
proper op. This will help to extend the functionalities
like sleep_us to poll timeout in future.
This change is referenced from Linux from below commit:
commit <5f5323a14cad19323060a8cbf9d96f2280a462dd> ("iopoll:
introduce read_poll_timeout macro")
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/iopoll.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/iopoll.h b/include/linux/iopoll.h index ab0ae1969a..51966d83da 100644 --- a/include/linux/iopoll.h +++ b/include/linux/iopoll.h @@ -11,7 +11,7 @@ #include <time.h> /** - * readx_poll_timeout - Periodically poll an address until a condition is met or a timeout occurs + * read_poll_timeout - Periodically poll an address until a condition is met or a timeout occurs * @op: accessor function (takes @addr as its only argument) * @addr: Address to poll * @val: Variable to read the value into @@ -24,7 +24,7 @@ * When available, you'll probably want to use one of the specialized * macros defined below rather than this macro directly. */ -#define readx_poll_timeout(op, addr, val, cond, timeout_us) \ +#define read_poll_timeout(op, addr, val, cond, timeout_us) \ ({ \ unsigned long timeout = timer_get_us() + timeout_us; \ for (;;) { \ @@ -39,6 +39,8 @@ (cond) ? 0 : -ETIMEDOUT; \ }) +#define readx_poll_timeout(op, addr, val, cond, timeout_us) \ + read_poll_timeout(op, addr, val, cond, timeout_us) #define readb_poll_timeout(addr, val, cond, timeout_us) \ readx_poll_timeout(readb, addr, val, cond, timeout_us) |