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authorPeter Mamonov <pmamonov@gmail.com>2015-09-24 19:20:24 +0300
committerSascha Hauer <s.hauer@pengutronix.de>2015-10-02 07:50:51 +0200
commit8165f3131c6515fd7375dce7e2ee5759f237e011 (patch)
tree9415ad13bedbcaad7561e2f1fbbd4739a5c359b1
parentd27cddcc3ad5c37c22acf287a5dbe36a0906359f (diff)
downloadbarebox-8165f3131c6515fd7375dce7e2ee5759f237e011.tar.gz
common: clock: introduce mdelay_non_interruptible()
Signed-off-by: Peter Mamonov <pmamonov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--common/clock.c9
-rw-r--r--include/clock.h1
-rw-r--r--include/common.h1
3 files changed, 11 insertions, 0 deletions
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..c3f4c53 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);