[PATCH net-next v7 02/10] iopoll: redefined readx_poll_timeout macro to simplify the code

From: Dejin Zheng
Date: Mon Mar 23 2020 - 11:06:35 EST


redefined readx_poll_timeout macro by read_poll_timeout to
simplify the code.

Signed-off-by: Dejin Zheng <zhengdejin5@xxxxxxxxx>
---
v6 -> v7:
- adapt to a newly added parameter sleep_before_read.
v5 -> v6:
- no changed
v4 -> v5:
- no changed
v3 -> v4:
- no changed
v2 -> v3:
- no changed
v1 -> v2:
- no changed

include/linux/iopoll.h | 20 +-------------------
1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/include/linux/iopoll.h b/include/linux/iopoll.h
index 70f89b389648..cb20c733b15a 100644
--- a/include/linux/iopoll.h
+++ b/include/linux/iopoll.h
@@ -76,25 +76,7 @@
* macros defined below rather than this macro directly.
*/
#define readx_poll_timeout(op, addr, val, cond, sleep_us, timeout_us) \
-({ \
- u64 __timeout_us = (timeout_us); \
- unsigned long __sleep_us = (sleep_us); \
- ktime_t __timeout = ktime_add_us(ktime_get(), __timeout_us); \
- might_sleep_if((__sleep_us) != 0); \
- for (;;) { \
- (val) = op(addr); \
- if (cond) \
- break; \
- if (__timeout_us && \
- ktime_compare(ktime_get(), __timeout) > 0) { \
- (val) = op(addr); \
- break; \
- } \
- if (__sleep_us) \
- usleep_range((__sleep_us >> 2) + 1, __sleep_us); \
- } \
- (cond) ? 0 : -ETIMEDOUT; \
-})
+ read_poll_timeout(op, val, cond, sleep_us, timeout_us, false, addr)

/**
* readx_poll_timeout_atomic - Periodically poll an address until a condition is met or a timeout occurs
--
2.25.0