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drm/tegra: dpaux: Disable interrupt when detached

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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>
This commit is contained in:
Thierry Reding 2015-07-03 14:56:46 +02:00
parent 3227166c3b
commit 9e532b3ad9
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/tegra/dpaux.c
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@ -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;