linux-kernel - [PATCH 2/2] media: platform: fsl-viu: mark local functions 'static'

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Date:   Fri,  6 Apr 2018 16:23:19 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Hans Verkuil <hansverk@...co.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] media: platform: fsl-viu: mark local functions 'static'

Both sparse and gcc (with 'make V=1') warn about non-static symbols that
have not been declared:

drivers/media/platform/fsl-viu.c:235:16: warning: symbol 'format_by_fourcc' was not declared. Should it be static?
drivers/media/platform/fsl-viu.c:248:6: warning: symbol 'viu_start_dma' was not declared. Should it be static?
drivers/media/platform/fsl-viu.c:259:6: warning: symbol 'viu_stop_dma' was not declared. Should it be static?
drivers/media/platform/fsl-viu.c:808:5: warning: symbol 'vidioc_g_fbuf' was not declared. Should it be static?
drivers/media/platform/fsl-viu.c:819:5: warning: symbol 'vidioc_s_fbuf' was not declared. Should it be static?
drivers/media/platform/fsl-viu.c:1311:6: warning: symbol 'viu_reset' was not declared. Should it be static?

In this driver, all instance should indeed be static. This leads to better
optimized code, and avoids potential namespace conflicts.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/media/platform/fsl-viu.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/fsl-viu.c b/drivers/media/platform/fsl-viu.c
index cc85620267f1..38c9be51f01f 100644
--- a/drivers/media/platform/fsl-viu.c
+++ b/drivers/media/platform/fsl-viu.c
@@ -229,7 +229,7 @@ enum status_config {
 
 static irqreturn_t viu_intr(int irq, void *dev_id);
 
-struct viu_fmt *format_by_fourcc(int fourcc)
+static struct viu_fmt *format_by_fourcc(int fourcc)
 {
 	int i;
 
@@ -242,7 +242,7 @@ struct viu_fmt *format_by_fourcc(int fourcc)
 	return NULL;
 }
 
-void viu_start_dma(struct viu_dev *dev)
+static void viu_start_dma(struct viu_dev *dev)
 {
 	struct viu_reg __iomem *vr = dev->vr;
 
@@ -253,7 +253,7 @@ void viu_start_dma(struct viu_dev *dev)
 	out_be32(&vr->status_cfg, INT_FIELD_EN);
 }
 
-void viu_stop_dma(struct viu_dev *dev)
+static void viu_stop_dma(struct viu_dev *dev)
 {
 	struct viu_reg __iomem *vr = dev->vr;
 	int cnt = 100;
@@ -802,7 +802,7 @@ static int vidioc_overlay(struct file *file, void *priv, unsigned int on)
 	return 0;
 }
 
-int vidioc_g_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg)
+static int vidioc_g_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg)
 {
 	struct viu_fh  *fh = priv;
 	struct viu_dev *dev = fh->dev;
@@ -813,7 +813,7 @@ int vidioc_g_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg)
 	return 0;
 }
 
-int vidioc_s_fbuf(struct file *file, void *priv, const struct v4l2_framebuffer *arg)
+static int vidioc_s_fbuf(struct file *file, void *priv, const struct v4l2_framebuffer *arg)
 {
 	struct viu_fh  *fh = priv;
 	struct viu_dev *dev = fh->dev;
@@ -1305,7 +1305,7 @@ static int viu_release(struct file *file)
 	return 0;
 }
 
-void viu_reset(struct viu_reg __iomem *reg)
+static void viu_reset(struct viu_reg __iomem *reg)
 {
 	out_be32(&reg->status_cfg, 0);
 	out_be32(&reg->luminance, 0x9512a254);
-- 
2.9.0