* [PATCH] mtk-mdp: constify vb2_ops structure
@ 2017-07-06 20:46 ` Gustavo A. R. Silva
0 siblings, 0 replies; 2+ messages in thread
From: Gustavo A. R. Silva @ 2017-07-06 20:46 UTC (permalink / raw)
To: Minghsiu Tsai, Houlong Wei, Andrew-CT Chen, Mauro Carvalho Chehab,
Matthias Brugger
Cc: linux-media, linux-arm-kernel, linux-mediatek, linux-kernel,
Gustavo A. R. Silva
Check for vb2_ops structures that are only stored in the ops field of a
vb2_queue structure. That field is declared const, so vb2_ops structures
that have this property can be declared as const also.
This issue was detected using Coccinelle and the following semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct vb2_ops i@p = { ... };
@ok@
identifier r.i;
struct vb2_queue e;
position p;
@@
e.ops = &i@p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
struct vb2_ops e;
@@
e@i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct vb2_ops i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
index 13afe48..3038d62 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
@@ -621,7 +621,7 @@ static void mtk_mdp_m2m_buf_queue(struct vb2_buffer *vb)
v4l2_m2m_buf_queue(ctx->m2m_ctx, to_vb2_v4l2_buffer(vb));
}
-static struct vb2_ops mtk_mdp_m2m_qops = {
+static const struct vb2_ops mtk_mdp_m2m_qops = {
.queue_setup = mtk_mdp_m2m_queue_setup,
.buf_prepare = mtk_mdp_m2m_buf_prepare,
.buf_queue = mtk_mdp_m2m_buf_queue,
--
2.5.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] mtk-mdp: constify vb2_ops structure
@ 2017-07-06 20:46 ` Gustavo A. R. Silva
0 siblings, 0 replies; 2+ messages in thread
From: Gustavo A. R. Silva @ 2017-07-06 20:46 UTC (permalink / raw)
To: linux-arm-kernel
Check for vb2_ops structures that are only stored in the ops field of a
vb2_queue structure. That field is declared const, so vb2_ops structures
that have this property can be declared as const also.
This issue was detected using Coccinelle and the following semantic patch:
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct vb2_ops i at p = { ... };
@ok@
identifier r.i;
struct vb2_queue e;
position p;
@@
e.ops = &i at p;
@bad@
position p != {r.p,ok.p};
identifier r.i;
struct vb2_ops e;
@@
e at i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct vb2_ops i = { ... };
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
index 13afe48..3038d62 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
@@ -621,7 +621,7 @@ static void mtk_mdp_m2m_buf_queue(struct vb2_buffer *vb)
v4l2_m2m_buf_queue(ctx->m2m_ctx, to_vb2_v4l2_buffer(vb));
}
-static struct vb2_ops mtk_mdp_m2m_qops = {
+static const struct vb2_ops mtk_mdp_m2m_qops = {
.queue_setup = mtk_mdp_m2m_queue_setup,
.buf_prepare = mtk_mdp_m2m_buf_prepare,
.buf_queue = mtk_mdp_m2m_buf_queue,
--
2.5.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2017-07-06 20:46 ` Gustavo A. R. Silva
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