When checking measured [de]activate latencies against expected
latencies, only print warning if driver has provided a non-zero
latency.
This allows drivers to set their [de]activate latencies to zero when
they are not known, or are don't care, and the omap_device core will
not complain about unexpected latencies.
RFC: Maybe the measuring of latency should also avoided all together
in this case?
Signed-off-by: Kevin Hilman <khil...@deeprootsystems.com>
---
arch/arm/plat-omap/omap_device.c | 20 ++++++++++++--------
1 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index f6cdf1a..83bee1c 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -148,10 +148,12 @@ static int _omap_device_activate(struct omap_device *od,
u8 ignore_lat)
"%llu usec\n", od->pdev.name, od->pm_lat_level,
act_lat);
- WARN(act_lat > odpl->activate_lat, "omap_device: %s.%d: "
- "activate step %d took longer than expected (%llu > %d)\n",
- od->pdev.name, od->pdev.id, od->pm_lat_level,
- act_lat, odpl->activate_lat);
+ if (odpl->activate_lat)
+ WARN(act_lat > odpl->activate_lat,
+ "omap_device: %s.%d: activate step %d "
+ "took longer than expected (%llu > %d)\n",
+ od->pdev.name, od->pdev.id, od->pm_lat_level,
+ act_lat, odpl->activate_lat);
od->dev_wakeup_lat -= odpl->activate_lat;
}
@@ -204,10 +206,12 @@ static int _omap_device_deactivate(struct omap_device
*od, u8 ignore_lat)
"%llu usec\n", od->pdev.name, od->pm_lat_level,
deact_lat);
- WARN(deact_lat > odpl->deactivate_lat, "omap_device: %s.%d: "
- "deactivate step %d took longer than expected "
- "(%llu > %d)\n", od->pdev.name, od->pdev.id,
- od->pm_lat_level, deact_lat, odpl->deactivate_lat);
+ if (odpl->deactivate_lat)
+ WARN(deact_lat > odpl->deactivate_lat,
+ "omap_device: %s.%d: "
+ "deactivate step %d took longer than expected "
+ "(%llu > %d)\n", od->pdev.name, od->pdev.id,
+ od->pm_lat_level, deact_lat, odpl->deactivate_lat);
od->dev_wakeup_lat += odpl->deactivate_lat;
--
1.6.5.1
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