linux-kernel - [PATCH] drm/pl111: Fix defined-but-not-used warnings in COMPILE

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Date:   Fri, 19 May 2017 11:01:32 -0700
From:   Eric Anholt <eric@...olt.net>
To:     dri-devel@...ts.freedesktop.org, Dave Airlie <airlied@...ux.ie>
Cc:     linux-kernel@...r.kernel.org,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        linus.walleij@...aro.org, Eric Anholt <eric@...olt.net>
Subject: [PATCH] drm/pl111: Fix defined-but-not-used warnings in COMPILE_TEST mode.

Our probe function is guarded by CONFIG_ARM_ABMA, so these functions
end up unused if it's not enabled.  We do want to be able to build DRM
drivers on inapplicable platforms, for refactor testing purposees.

Signed-off-by: Eric Anholt <eric@...olt.net>
---
 drivers/gpu/drm/pl111/pl111_drv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c
index 936403f65508..0a99a80dc354 100644
--- a/drivers/gpu/drm/pl111/pl111_drv.c
+++ b/drivers/gpu/drm/pl111/pl111_drv.c
@@ -78,7 +78,7 @@ struct drm_mode_config_funcs mode_config_funcs = {
 	.atomic_commit = drm_atomic_helper_commit,
 };
 
-static int pl111_modeset_init(struct drm_device *dev)
+static int __used pl111_modeset_init(struct drm_device *dev)
 {
 	struct drm_mode_config *mode_config;
 	struct pl111_drm_dev_private *priv = dev->dev_private;
@@ -146,7 +146,7 @@ static void pl111_lastclose(struct drm_device *dev)
 	drm_fbdev_cma_restore_mode(priv->fbdev);
 }
 
-static struct drm_driver pl111_drm_driver = {
+static struct drm_driver __used pl111_drm_driver = {
 	.driver_features =
 		DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
 	.lastclose = pl111_lastclose,
-- 
2.11.0