[PATCH] drm/exynos: remove ignoring return value warning in hdmi

[Seung-Woo Kim]

The definition of regulator_bulk_enable is fixed with __must_check
and this causes following build warning.
warning: ignoring return value of 'regulator_bulk_enable',
declared with attribute warn_unused_result
This patch fixes to check return value of the function.

Signed-off-by: Seung-Woo Kim <sw0312.kim at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_hdmi.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 2f78532..f807b13 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1699,7 +1699,9 @@ static void hdmi_poweron(struct hdmi_context *hdata)
 
 	mutex_unlock(&hdata->hdmi_mutex);
 
-	regulator_bulk_enable(res->regul_count, res->regul_bulk);
+	if (regulator_bulk_enable(res->regul_count, res->regul_bulk))
+		DRM_ERROR("failed to enable regulator bulk\n");
+
 	clk_enable(res->hdmiphy);
 	clk_enable(res->hdmi);
 	clk_enable(res->sclk_hdmi);
-- 
1.7.4.1