From 5525b8314389a0c558d15464e86f438974b94e32 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Mon, 18 Jun 2018 00:38:52 -0400 Subject: [PATCH] media: mem2mem: Make .job_abort optional Implementing job_abort() does not make sense on some drivers. This is not a problem, as the abort is not required to wait for the job to finish. Quite the opposite, drivers are encouraged not to wait. Demote v4l2_m2m_ops.job_abort from required to optional, and clean all drivers with dummy implementations. Signed-off-by: Ezequiel Garcia Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 5 ----- drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c | 5 ----- drivers/media/platform/rcar_jpu.c | 5 ----- drivers/media/platform/rockchip/rga/rga.c | 6 ------ drivers/media/platform/s5p-g2d/g2d.c | 5 ----- drivers/media/platform/s5p-jpeg/jpeg-core.c | 7 ------- drivers/media/v4l2-core/v4l2-mem2mem.c | 6 +++--- include/media/v4l2-mem2mem.h | 2 +- 8 files changed, 4 insertions(+), 37 deletions(-) diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c index 328e8f6..4f24da8 100644 --- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c @@ -861,14 +861,9 @@ static int mtk_jpeg_job_ready(void *priv) return (ctx->state == MTK_JPEG_RUNNING) ? 1 : 0; } -static void mtk_jpeg_job_abort(void *priv) -{ -} - static const struct v4l2_m2m_ops mtk_jpeg_m2m_ops = { .device_run = mtk_jpeg_device_run, .job_ready = mtk_jpeg_job_ready, - .job_abort = mtk_jpeg_job_abort, }; static int mtk_jpeg_queue_init(void *priv, struct vb2_queue *src_vq, diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c index c2e2f5f..ceffc31 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c @@ -441,10 +441,6 @@ static void mtk_mdp_m2m_stop_streaming(struct vb2_queue *q) pm_runtime_put(&ctx->mdp_dev->pdev->dev); } -static void mtk_mdp_m2m_job_abort(void *priv) -{ -} - /* The color format (num_planes) must be already configured. */ static void mtk_mdp_prepare_addr(struct mtk_mdp_ctx *ctx, struct vb2_buffer *vb, @@ -1215,7 +1211,6 @@ static const struct v4l2_file_operations mtk_mdp_m2m_fops = { static const struct v4l2_m2m_ops mtk_mdp_m2m_ops = { .device_run = mtk_mdp_m2m_device_run, - .job_abort = mtk_mdp_m2m_job_abort, }; int mtk_mdp_register_m2m_device(struct mtk_mdp_dev *mdp) diff --git a/drivers/media/platform/rcar_jpu.c b/drivers/media/platform/rcar_jpu.c index 90d40b2..a808258a 100644 --- a/drivers/media/platform/rcar_jpu.c +++ b/drivers/media/platform/rcar_jpu.c @@ -1492,13 +1492,8 @@ static void jpu_device_run(void *priv) spin_unlock_irqrestore(&ctx->jpu->lock, flags); } -static void jpu_job_abort(void *priv) -{ -} - static const struct v4l2_m2m_ops jpu_m2m_ops = { .device_run = jpu_device_run, - .job_abort = jpu_job_abort, }; /* diff --git a/drivers/media/platform/rockchip/rga/rga.c b/drivers/media/platform/rockchip/rga/rga.c index 8ace1873..69a2797 100644 --- a/drivers/media/platform/rockchip/rga/rga.c +++ b/drivers/media/platform/rockchip/rga/rga.c @@ -39,11 +39,6 @@ static int debug; module_param(debug, int, 0644); -static void job_abort(void *prv) -{ - /* Can't do anything rational here */ -} - static void device_run(void *prv) { struct rga_ctx *ctx = prv; @@ -104,7 +99,6 @@ static irqreturn_t rga_isr(int irq, void *prv) static struct v4l2_m2m_ops rga_m2m_ops = { .device_run = device_run, - .job_abort = job_abort, }; static int diff --git a/drivers/media/platform/s5p-g2d/g2d.c b/drivers/media/platform/s5p-g2d/g2d.c index ee7322b..e901201 100644 --- a/drivers/media/platform/s5p-g2d/g2d.c +++ b/drivers/media/platform/s5p-g2d/g2d.c @@ -483,10 +483,6 @@ static int vidioc_s_crop(struct file *file, void *prv, const struct v4l2_crop *c return 0; } -static void job_abort(void *prv) -{ -} - static void device_run(void *prv) { struct g2d_ctx *ctx = prv; @@ -605,7 +601,6 @@ static const struct video_device g2d_videodev = { static const struct v4l2_m2m_ops g2d_m2m_ops = { .device_run = device_run, - .job_abort = job_abort, }; static const struct of_device_id exynos_g2d_match[]; diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 79b63da..04fd2e0 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -2467,26 +2467,19 @@ static int s5p_jpeg_job_ready(void *priv) return 1; } -static void s5p_jpeg_job_abort(void *priv) -{ -} - static struct v4l2_m2m_ops s5p_jpeg_m2m_ops = { .device_run = s5p_jpeg_device_run, .job_ready = s5p_jpeg_job_ready, - .job_abort = s5p_jpeg_job_abort, }; static struct v4l2_m2m_ops exynos3250_jpeg_m2m_ops = { .device_run = exynos3250_jpeg_device_run, .job_ready = s5p_jpeg_job_ready, - .job_abort = s5p_jpeg_job_abort, }; static struct v4l2_m2m_ops exynos4_jpeg_m2m_ops = { .device_run = exynos4_jpeg_device_run, .job_ready = s5p_jpeg_job_ready, - .job_abort = s5p_jpeg_job_abort, }; /* diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 725da74..4aeedb9 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -322,7 +322,8 @@ static void v4l2_m2m_cancel_job(struct v4l2_m2m_ctx *m2m_ctx) m2m_ctx->job_flags |= TRANS_ABORT; if (m2m_ctx->job_flags & TRANS_RUNNING) { spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags); - m2m_dev->m2m_ops->job_abort(m2m_ctx->priv); + if (m2m_dev->m2m_ops->job_abort) + m2m_dev->m2m_ops->job_abort(m2m_ctx->priv); dprintk("m2m_ctx %p running, will wait to complete", m2m_ctx); wait_event(m2m_ctx->finished, !(m2m_ctx->job_flags & TRANS_RUNNING)); @@ -788,8 +789,7 @@ struct v4l2_m2m_dev *v4l2_m2m_init(const struct v4l2_m2m_ops *m2m_ops) { struct v4l2_m2m_dev *m2m_dev; - if (!m2m_ops || WARN_ON(!m2m_ops->device_run) || - WARN_ON(!m2m_ops->job_abort)) + if (!m2m_ops || WARN_ON(!m2m_ops->device_run)) return ERR_PTR(-EINVAL); m2m_dev = kzalloc(sizeof *m2m_dev, GFP_KERNEL); diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h index af48b1ec..d60d306 100644 --- a/include/media/v4l2-mem2mem.h +++ b/include/media/v4l2-mem2mem.h @@ -32,7 +32,7 @@ * assumed that one source and one destination buffer are all * that is required for the driver to perform one full transaction. * This method may not sleep. - * @job_abort: required. Informs the driver that it has to abort the currently + * @job_abort: optional. Informs the driver that it has to abort the currently * running transaction as soon as possible (i.e. as soon as it can * stop the device safely; e.g. in the next interrupt handler), * even if the transaction would not have been finished by then. -- 2.7.4