We get 4 warnings when building kernel with W=1:
drivers/gpu/drm/sti/sti_gdp.c:476:5: warning: no previous prototype for 'sti_gdp_field_cb' [-Wmissing-prototypes]
drivers/gpu/drm/sti/sti_hqvdp.c:786:5: warning: no previous prototype for 'sti_hqvdp_vtg_cb' [-Wmissing-prototypes]
drivers/gpu/drm/sti/sti_hqvdp.c:1292:5: warning: no previous prototype for 'sti_hqvdp_bind' [-Wmissing-prototypes]
drivers/gpu/drm/sti/sti_drv.c:143:6: warning: no previous prototype for 'sti_drm_dbg_cleanup' [-Wmissing-prototypes]
In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static.
So this patch marks these functions with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@xxxxxxxxxx>
---
drivers/gpu/drm/sti/sti_drv.c | 2 +-
drivers/gpu/drm/sti/sti_gdp.c | 2 +-
drivers/gpu/drm/sti/sti_hqvdp.c | 5 +++--
3 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index 7cd3804..e6f0706 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -140,7 +140,7 @@ err:
return ret;
}
-void sti_drm_dbg_cleanup(struct drm_minor *minor)
+static void sti_drm_dbg_cleanup(struct drm_minor *minor)
{
drm_debugfs_remove_files(sti_drm_dbg_list,
ARRAY_SIZE(sti_drm_dbg_list), minor);
diff --git a/drivers/gpu/drm/sti/sti_gdp.c b/drivers/gpu/drm/sti/sti_gdp.c
index b8d942c..4648d1b 100644
--- a/drivers/gpu/drm/sti/sti_gdp.c
+++ b/drivers/gpu/drm/sti/sti_gdp.c
@@ -473,7 +473,7 @@ static void sti_gdp_disable(struct sti_gdp *gdp)
* RETURNS:
* 0 on success.
*/
-int sti_gdp_field_cb(struct notifier_block *nb,
+static int sti_gdp_field_cb(struct notifier_block *nb,
unsigned long event, void *data)
{
struct sti_gdp *gdp = container_of(nb, struct sti_gdp, vtg_field_nb);
diff --git a/drivers/gpu/drm/sti/sti_hqvdp.c b/drivers/gpu/drm/sti/sti_hqvdp.c
index b5ee783..7f0dea8 100644
--- a/drivers/gpu/drm/sti/sti_hqvdp.c
+++ b/drivers/gpu/drm/sti/sti_hqvdp.c
@@ -783,7 +783,8 @@ static void sti_hqvdp_disable(struct sti_hqvdp *hqvdp)
* RETURNS:
* 0 on success.
*/
-int sti_hqvdp_vtg_cb(struct notifier_block *nb, unsigned long evt, void *data)
+static int
+sti_hqvdp_vtg_cb(struct notifier_block *nb, unsigned long evt, void *data)
{
struct sti_hqvdp *hqvdp = container_of(nb, struct sti_hqvdp, vtg_nb);
int btm_cmd_offset, top_cmd_offest;
@@ -1289,7 +1290,7 @@ static struct drm_plane *sti_hqvdp_create(struct drm_device *drm_dev,
return &hqvdp->plane.drm_plane;
}
-int sti_hqvdp_bind(struct device *dev, struct device *master, void *data)
+static int sti_hqvdp_bind(struct device *dev, struct device *master, void *data)
{
struct sti_hqvdp *hqvdp = dev_get_drvdata(dev);
struct drm_device *drm_dev = data;
--
2.7.4
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