"struct vb2_ops" are not modified in this driver.
Constifying this structure moves some data to a read-only section, so
increase overall security.
On a x86_64, with allmodconfig:
Before:
======
text data bss dec hex filename
18059 3096 16 21171 52b3 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateful.o
After:
=====
text data bss dec hex filename
18171 2968 16 21155 52a3 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateful.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
.../platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateful.c | 2 +-
.../platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateful.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateful.c
index 11ca2c2fbaad..e62c1c18758b 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateful.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateful.c
@@ -595,7 +595,7 @@ static void mtk_init_vdec_params(struct mtk_vcodec_dec_ctx *ctx)
}
}
-static struct vb2_ops mtk_vdec_frame_vb2_ops = {
+static const struct vb2_ops mtk_vdec_frame_vb2_ops = {
.queue_setup = vb2ops_vdec_queue_setup,
.buf_prepare = vb2ops_vdec_buf_prepare,
.wait_prepare = vb2_ops_wait_prepare,
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
index b903e39fee89..3307dc15fc1d 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_stateless.c
@@ -854,7 +854,7 @@ static int vb2ops_vdec_out_buf_validate(struct vb2_buffer *vb)
return 0;
}
-static struct vb2_ops mtk_vdec_request_vb2_ops = {
+static const struct vb2_ops mtk_vdec_request_vb2_ops = {
.queue_setup = vb2ops_vdec_queue_setup,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
--
2.45.2
