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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-10-24 09:50:50 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-01-09 15:15:24 +0200 |
| commit | 6da9f89172b94411896130c6e1acf159da3dc760 (patch) | |
| tree | fb656b3cd9cdb5973f6891ccde3be5fb4fcb739a /drivers/video/omap2 | |
| parent | 802eee95bde72fd0cd0f3a5b2098375a487d1eda (diff) | |
| download | linux-6da9f89172b94411896130c6e1acf159da3dc760.tar.bz2 | |
drm/omap: fix (un)registering irqs inside an irq handler
omapdrm (un)registers irqs inside an irq handler. The problem is that
the (un)register function uses dispc_runtime_get/put() to enable the
clocks, and those functions are not irq safe by default.
This was kind of fixed in 48664b21aeeffb40c5fa06843f18052e2c4ec9ef
(OMAPDSS: DISPC: set irq_safe for runtime PM), which makes dispc's
runtime calls irq-safe.
However, using pm_runtime_irq_safe in dispc makes the parent of dispc,
dss, always enabled, effectively preventing PM for the whole DSS module.
This patch makes omapdrm behave better by adding new irq (un)register
functions that do not use dispc_runtime_get/put, and using those
functions in interrupt context. Thus we can make dispc again
non-irq-safe, allowing proper PM.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/video/omap2')
| -rw-r--r-- | drivers/video/omap2/dss/dispc.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 4ec59ca72e5d..91c687fd002e 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -3691,7 +3691,6 @@ static int __init omap_dispchw_probe(struct platform_device *pdev) } pm_runtime_enable(&pdev->dev); - pm_runtime_irq_safe(&pdev->dev); r = dispc_runtime_get(); if (r) |