Re: [PATCH] [media] platform: constify vb2_ops structures
From: Fabien DESSENNE
Date: Fri Sep 09 2016 - 04:54:57 EST
Hi
On 09/09/2016 01:59 AM, Julia Lawall wrote:
> 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.
>
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @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 = { ... };
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>
>
> ---
> drivers/media/platform/exynos-gsc/gsc-m2m.c | 2 +-
> drivers/media/platform/exynos4-is/fimc-capture.c | 2 +-
> drivers/media/platform/exynos4-is/fimc-m2m.c | 2 +-
> drivers/media/platform/m2m-deinterlace.c | 2 +-
> drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c | 2 +-
> drivers/media/platform/mx2_emmaprp.c | 2 +-
> drivers/media/platform/rcar-vin/rcar-dma.c | 2 +-
> drivers/media/platform/rcar_jpu.c | 2 +-
> drivers/media/platform/s5p-g2d/g2d.c | 2 +-
> drivers/media/platform/s5p-jpeg/jpeg-core.c | 2 +-
> drivers/media/platform/sh_vou.c | 2 +-
> drivers/media/platform/soc_camera/atmel-isi.c | 2 +-
> drivers/media/platform/soc_camera/rcar_vin.c | 2 +-
> drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c | 2 +-
For this driver:
> drivers/media/platform/sti/bdisp/bdisp-v4l2.c | 2 +-
Reviewed-by: Fabien Dessenne <fabien.dessenne@xxxxxx>
> drivers/media/platform/ti-vpe/cal.c | 2 +-
> drivers/media/platform/ti-vpe/vpe.c | 2 +-
> drivers/media/platform/vim2m.c | 2 +-
> drivers/media/platform/xilinx/xilinx-dma.c | 2 +-
> 19 files changed, 19 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
> index 7ae1a13..1d5836c 100644
> --- a/drivers/media/platform/xilinx/xilinx-dma.c
> +++ b/drivers/media/platform/xilinx/xilinx-dma.c
> @@ -474,7 +474,7 @@ static void xvip_dma_stop_streaming(struct vb2_queue *vq)
> spin_unlock_irq(&dma->queued_lock);
> }
>
> -static struct vb2_ops xvip_dma_queue_qops = {
> +static const struct vb2_ops xvip_dma_queue_qops = {
> .queue_setup = xvip_dma_queue_setup,
> .buf_prepare = xvip_dma_buffer_prepare,
> .buf_queue = xvip_dma_buffer_queue,
> diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
> index 30211f6..46de657 100644
> --- a/drivers/media/platform/soc_camera/atmel-isi.c
> +++ b/drivers/media/platform/soc_camera/atmel-isi.c
> @@ -536,7 +536,7 @@ static void stop_streaming(struct vb2_queue *vq)
> pm_runtime_put(ici->v4l2_dev.dev);
> }
>
> -static struct vb2_ops isi_video_qops = {
> +static const struct vb2_ops isi_video_qops = {
> .queue_setup = queue_setup,
> .buf_init = buffer_init,
> .buf_prepare = buffer_prepare,
> diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
> index 785e693..d9c07b8 100644
> --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
> +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
> @@ -2538,7 +2538,7 @@ static void s5p_jpeg_stop_streaming(struct vb2_queue *q)
> pm_runtime_put(ctx->jpeg->dev);
> }
>
> -static struct vb2_ops s5p_jpeg_qops = {
> +static const struct vb2_ops s5p_jpeg_qops = {
> .queue_setup = s5p_jpeg_queue_setup,
> .buf_prepare = s5p_jpeg_buf_prepare,
> .buf_queue = s5p_jpeg_buf_queue,
> diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
> index e967fcf..44323cb 100644
> --- a/drivers/media/platform/ti-vpe/cal.c
> +++ b/drivers/media/platform/ti-vpe/cal.c
> @@ -1379,7 +1379,7 @@ static void cal_stop_streaming(struct vb2_queue *vq)
> cal_runtime_put(ctx->dev);
> }
>
> -static struct vb2_ops cal_video_qops = {
> +static const struct vb2_ops cal_video_qops = {
> .queue_setup = cal_queue_setup,
> .buf_prepare = cal_buffer_prepare,
> .buf_queue = cal_buffer_queue,
> diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c
> index 55a1458..0189f7f 100644
> --- a/drivers/media/platform/ti-vpe/vpe.c
> +++ b/drivers/media/platform/ti-vpe/vpe.c
> @@ -1878,7 +1878,7 @@ static void vpe_stop_streaming(struct vb2_queue *q)
> vpdma_dump_regs(ctx->dev->vpdma);
> }
>
> -static struct vb2_ops vpe_qops = {
> +static const struct vb2_ops vpe_qops = {
> .queue_setup = vpe_queue_setup,
> .buf_prepare = vpe_buf_prepare,
> .buf_queue = vpe_buf_queue,
> diff --git a/drivers/media/platform/soc_camera/rcar_vin.c b/drivers/media/platform/soc_camera/rcar_vin.c
> index 9c13752..0009fc5 100644
> --- a/drivers/media/platform/soc_camera/rcar_vin.c
> +++ b/drivers/media/platform/soc_camera/rcar_vin.c
> @@ -856,7 +856,7 @@ static void rcar_vin_stop_streaming(struct vb2_queue *vq)
> spin_unlock_irq(&priv->lock);
> }
>
> -static struct vb2_ops rcar_vin_vb2_ops = {
> +static const struct vb2_ops rcar_vin_vb2_ops = {
> .queue_setup = rcar_vin_videobuf_setup,
> .buf_queue = rcar_vin_videobuf_queue,
> .stop_streaming = rcar_vin_stop_streaming,
> diff --git a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
> index 02b519d..02c8dc5 100644
> --- a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
> +++ b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
> @@ -470,7 +470,7 @@ static void sh_mobile_ceu_stop_streaming(struct vb2_queue *q)
> sh_mobile_ceu_soft_reset(pcdev);
> }
>
> -static struct vb2_ops sh_mobile_ceu_videobuf_ops = {
> +static const struct vb2_ops sh_mobile_ceu_videobuf_ops = {
> .queue_setup = sh_mobile_ceu_videobuf_setup,
> .buf_prepare = sh_mobile_ceu_videobuf_prepare,
> .buf_queue = sh_mobile_ceu_videobuf_queue,
> diff --git a/drivers/media/platform/s5p-g2d/g2d.c b/drivers/media/platform/s5p-g2d/g2d.c
> index 391dd7a..62c0dec 100644
> --- a/drivers/media/platform/s5p-g2d/g2d.c
> +++ b/drivers/media/platform/s5p-g2d/g2d.c
> @@ -138,7 +138,7 @@ static void g2d_buf_queue(struct vb2_buffer *vb)
> v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
> }
>
> -static struct vb2_ops g2d_qops = {
> +static const struct vb2_ops g2d_qops = {
> .queue_setup = g2d_queue_setup,
> .buf_prepare = g2d_buf_prepare,
> .buf_queue = g2d_buf_queue,
> diff --git a/drivers/media/platform/rcar_jpu.c b/drivers/media/platform/rcar_jpu.c
> index 16782ce..d1746ec 100644
> --- a/drivers/media/platform/rcar_jpu.c
> +++ b/drivers/media/platform/rcar_jpu.c
> @@ -1183,7 +1183,7 @@ static void jpu_stop_streaming(struct vb2_queue *vq)
> }
> }
>
> -static struct vb2_ops jpu_qops = {
> +static const struct vb2_ops jpu_qops = {
> .queue_setup = jpu_queue_setup,
> .buf_prepare = jpu_buf_prepare,
> .buf_queue = jpu_buf_queue,
> diff --git a/drivers/media/platform/exynos-gsc/gsc-m2m.c b/drivers/media/platform/exynos-gsc/gsc-m2m.c
> index ec6494c..a341a7f 100644
> --- a/drivers/media/platform/exynos-gsc/gsc-m2m.c
> +++ b/drivers/media/platform/exynos-gsc/gsc-m2m.c
> @@ -261,7 +261,7 @@ static void gsc_m2m_buf_queue(struct vb2_buffer *vb)
> v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
> }
>
> -static struct vb2_ops gsc_m2m_qops = {
> +static const struct vb2_ops gsc_m2m_qops = {
> .queue_setup = gsc_m2m_queue_setup,
> .buf_prepare = gsc_m2m_buf_prepare,
> .buf_queue = gsc_m2m_buf_queue,
> diff --git a/drivers/media/platform/sh_vou.c b/drivers/media/platform/sh_vou.c
> index e1f39b4..1ec9a2e 100644
> --- a/drivers/media/platform/sh_vou.c
> +++ b/drivers/media/platform/sh_vou.c
> @@ -362,7 +362,7 @@ static void sh_vou_stop_streaming(struct vb2_queue *vq)
> spin_unlock_irqrestore(&vou_dev->lock, flags);
> }
>
> -static struct vb2_ops sh_vou_qops = {
> +static const struct vb2_ops sh_vou_qops = {
> .queue_setup = sh_vou_queue_setup,
> .buf_prepare = sh_vou_buf_prepare,
> .buf_queue = sh_vou_buf_queue,
> diff --git a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
> index 3b1ac68..45f82b5 100644
> --- a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
> +++ b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c
> @@ -527,7 +527,7 @@ static void bdisp_stop_streaming(struct vb2_queue *q)
> pm_runtime_put(ctx->bdisp_dev->dev);
> }
>
> -static struct vb2_ops bdisp_qops = {
> +static const struct vb2_ops bdisp_qops = {
> .queue_setup = bdisp_queue_setup,
> .buf_prepare = bdisp_buf_prepare,
> .buf_queue = bdisp_buf_queue,
> diff --git a/drivers/media/platform/m2m-deinterlace.c b/drivers/media/platform/m2m-deinterlace.c
> index 0fcb5c78..0870fad 100644
> --- a/drivers/media/platform/m2m-deinterlace.c
> +++ b/drivers/media/platform/m2m-deinterlace.c
> @@ -852,7 +852,7 @@ static void deinterlace_buf_queue(struct vb2_buffer *vb)
> v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
> }
>
> -static struct vb2_ops deinterlace_qops = {
> +static const struct vb2_ops deinterlace_qops = {
> .queue_setup = deinterlace_queue_setup,
> .buf_prepare = deinterlace_buf_prepare,
> .buf_queue = deinterlace_buf_queue,
> diff --git a/drivers/media/platform/mx2_emmaprp.c b/drivers/media/platform/mx2_emmaprp.c
> index c639406..e68d271 100644
> --- a/drivers/media/platform/mx2_emmaprp.c
> +++ b/drivers/media/platform/mx2_emmaprp.c
> @@ -743,7 +743,7 @@ static void emmaprp_buf_queue(struct vb2_buffer *vb)
> v4l2_m2m_buf_queue(ctx->m2m_ctx, vbuf);
> }
>
> -static struct vb2_ops emmaprp_qops = {
> +static const struct vb2_ops emmaprp_qops = {
> .queue_setup = emmaprp_queue_setup,
> .buf_prepare = emmaprp_buf_prepare,
> .buf_queue = emmaprp_buf_queue,
> diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
> index 496aa97..07c07c1 100644
> --- a/drivers/media/platform/rcar-vin/rcar-dma.c
> +++ b/drivers/media/platform/rcar-vin/rcar-dma.c
> @@ -1116,7 +1116,7 @@ static void rvin_stop_streaming(struct vb2_queue *vq)
> rvin_disable_interrupts(vin);
> }
>
> -static struct vb2_ops rvin_qops = {
> +static const struct vb2_ops rvin_qops = {
> .queue_setup = rvin_queue_setup,
> .buf_prepare = rvin_buffer_prepare,
> .buf_queue = rvin_buffer_queue,
> diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c
> index cd0ff4a..a98f679 100644
> --- a/drivers/media/platform/vim2m.c
> +++ b/drivers/media/platform/vim2m.c
> @@ -815,7 +815,7 @@ static void vim2m_stop_streaming(struct vb2_queue *q)
> }
> }
>
> -static struct vb2_ops vim2m_qops = {
> +static const struct vb2_ops vim2m_qops = {
> .queue_setup = vim2m_queue_setup,
> .buf_prepare = vim2m_buf_prepare,
> .buf_queue = vim2m_buf_queue,
> diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c
> index fdec499..344028e 100644
> --- a/drivers/media/platform/exynos4-is/fimc-capture.c
> +++ b/drivers/media/platform/exynos4-is/fimc-capture.c
> @@ -452,7 +452,7 @@ static void buffer_queue(struct vb2_buffer *vb)
> spin_unlock_irqrestore(&fimc->slock, flags);
> }
>
> -static struct vb2_ops fimc_capture_qops = {
> +static const struct vb2_ops fimc_capture_qops = {
> .queue_setup = queue_setup,
> .buf_prepare = buffer_prepare,
> .buf_queue = buffer_queue,
> diff --git a/drivers/media/platform/exynos4-is/fimc-m2m.c b/drivers/media/platform/exynos4-is/fimc-m2m.c
> index b1309e1..6028e4f 100644
> --- a/drivers/media/platform/exynos4-is/fimc-m2m.c
> +++ b/drivers/media/platform/exynos4-is/fimc-m2m.c
> @@ -219,7 +219,7 @@ static void fimc_buf_queue(struct vb2_buffer *vb)
> v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
> }
>
> -static struct vb2_ops fimc_qops = {
> +static const struct vb2_ops fimc_qops = {
> .queue_setup = fimc_queue_setup,
> .buf_prepare = fimc_buf_prepare,
> .buf_queue = fimc_buf_queue,
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> index 3ed3f2d..f8e4611 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> @@ -864,7 +864,7 @@ static void vb2ops_venc_stop_streaming(struct vb2_queue *q)
> ctx->state = MTK_STATE_FREE;
> }
>
> -static struct vb2_ops mtk_venc_vb2_ops = {
> +static const struct vb2_ops mtk_venc_vb2_ops = {
> .queue_setup = vb2ops_venc_queue_setup,
> .buf_prepare = vb2ops_venc_buf_prepare,
> .buf_queue = vb2ops_venc_buf_queue,
>