[PATCH v7 1/5] common: clock: introduce mdelay_non_interruptible()

[Peter Mamonov <pmamonov@gmail.com>]

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
---
 common/clock.c   | 9 +++++++++
 include/clock.h  | 1 +
 include/common.h | 1 +
 3 files changed, 11 insertions(+)

diff --git a/common/clock.c b/common/clock.c
index 35c9e6c..2c5dd91 100644
--- a/common/clock.c
+++ b/common/clock.c
@@ -202,6 +202,15 @@ void mdelay(unsigned long msecs)
 }
 EXPORT_SYMBOL(mdelay);
 
+void mdelay_non_interruptible(unsigned long msecs)
+{
+	uint64_t start = get_time_ns();
+
+	while (!is_timeout_non_interruptible(start, msecs * MSECOND))
+		;
+}
+EXPORT_SYMBOL(mdelay_non_interruptible);
+
 int init_clock(struct clocksource *cs)
 {
 	current_clock = cs;
diff --git a/include/clock.h b/include/clock.h
index 691befc..68d71d7 100644
--- a/include/clock.h
+++ b/include/clock.h
@@ -38,6 +38,7 @@ int is_timeout_non_interruptible(uint64_t start_ns, uint64_t time_offset_ns);
 
 void ndelay(unsigned long nsecs);
 void mdelay(unsigned long msecs);
+void mdelay_non_interruptible (unsigned long msecs);
 
 #define SECOND ((uint64_t)(1000 * 1000 * 1000))
 #define MSECOND ((uint64_t)(1000 * 1000))
diff --git a/include/common.h b/include/common.h
index 553a7f4..c576908 100644
--- a/include/common.h
+++ b/include/common.h
@@ -72,6 +72,7 @@ void __noreturn poweroff(void);
 /* lib_$(ARCH)/time.c */
 void	udelay (unsigned long);
 void	mdelay (unsigned long);
+void	mdelay_non_interruptible (unsigned long);
 
 /* lib_generic/crc32.c */
 uint32_t crc32(uint32_t, const void*, unsigned int);
-- 
2.1.4


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