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| author | Thierry Reding <treding@nvidia.com> | 2015-07-03 14:56:46 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2015-08-13 13:47:49 +0200 |
| commit | 9e532b3ad9a7fc5f00d29c766439ffbdcc403146 (patch) | |
| tree | fd6ea2378378a77902d4f795bb339ab6d1880cc5 /drivers/gpu/drm/tegra/dpaux.c | |
| parent | drm/tegra: dpaux: Configure pads as I2C by default (diff) | |
| download | linux-9e532b3ad9a7fc5f00d29c766439ffbdcc403146.tar.xz linux-9e532b3ad9a7fc5f00d29c766439ffbdcc403146.zip | |
drm/tegra: dpaux: Disable interrupt when detached
When the DPAUX isn't attached to an SOR the interrupts are not useful.
This also prevents a race that could potentially cause a crash on driver
removal.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/dpaux.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dpaux.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index 909072d95077..224a7dc8e4ed 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -352,6 +352,8 @@ static int tegra_dpaux_probe(struct platform_device *pdev) return err; } + disable_irq(dpaux->irq); + dpaux->aux.transfer = tegra_dpaux_transfer; dpaux->aux.dev = &pdev->dev; @@ -468,8 +470,10 @@ int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output) enum drm_connector_status status; status = tegra_dpaux_detect(dpaux); - if (status == connector_status_connected) + if (status == connector_status_connected) { + enable_irq(dpaux->irq); return 0; + } usleep_range(1000, 2000); } @@ -482,6 +486,8 @@ int tegra_dpaux_detach(struct tegra_dpaux *dpaux) unsigned long timeout; int err; + disable_irq(dpaux->irq); + err = regulator_disable(dpaux->vdd); if (err < 0) return err; |