video: tegra20: dsi: use regulator_set_enable_if_allowed
With the commit 4fcba5d556b4 ("regulator: implement basic reference
counter") the return value of regulator_set_enable may be EALREADY or
EBUSY for fixed/gpio regulators and may be further expanded on all
regulators.
Change to use the more relaxed regulator_set_enable_if_allowed to
continue if regulator already was enabled or disabled.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/drivers/video/tegra20/tegra-dsi.c b/drivers/video/tegra20/tegra-dsi.c
index 8c3404e..b4cf4fa 100644
--- a/drivers/video/tegra20/tegra-dsi.c
+++ b/drivers/video/tegra20/tegra-dsi.c
@@ -831,11 +831,9 @@
tegra_dsi_get_format(device->format, &priv->format);
- if (priv->avdd) {
- ret = regulator_set_enable(priv->avdd, true);
- if (ret)
- return ret;
- }
+ ret = regulator_set_enable_if_allowed(priv->avdd, true);
+ if (ret && ret != -ENOSYS)
+ return ret;
tegra_dsi_init_clocks(dev);