From: Kevin Hilman <khil...@deeprootsystems.com>
During suspend and resume, when omap_device deactivation and
activation is happening, the timekeeping subsystem has likely already
been suspended. Thus getnstimeofday() will fail and trigger a WARN().
Use read_persistent_clock() instead of getnstimeofday() to avoid this.
Signed-off-by: Kevin Hilman <khil...@deeprootsystems.com>
Signed-off-by: Paul Walmsley <p...@pwsan.com>
---
arch/arm/plat-omap/omap_device.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index 54fe0a2..9a502af 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -134,12 +134,12 @@ static int _omap_device_activate(struct omap_device *od,
u8 ignore_lat)
(od->dev_wakeup_lat <= od->_dev_wakeup_lat_limit))
break;
- getnstimeofday(&a);
+ read_persistent_clock(&a);
/* XXX check return code */
odpl->activate_func(od);
- getnstimeofday(&b);
+ read_persistent_clock(&b);
c = timespec_sub(b, a);
act_lat = timespec_to_ns(&c) * NSEC_PER_USEC;
@@ -190,12 +190,12 @@ static int _omap_device_deactivate(struct omap_device
*od, u8 ignore_lat)
od->_dev_wakeup_lat_limit))
break;
- getnstimeofday(&a);
+ read_persistent_clock(&a);
/* XXX check return code */
odpl->deactivate_func(od);
- getnstimeofday(&b);
+ read_persistent_clock(&b);
c = timespec_sub(b, a);
deact_lat = timespec_to_ns(&c) * NSEC_PER_USEC;
--
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