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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 <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Ezequiel Garcia 2018-06-18 00:38:52 -04:00 committed by Mauro Carvalho Chehab
parent 774f1c9127
commit 5525b83143
8 changed files with 4 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
View File

@ -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,

5
drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
View File

@ -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)

5
drivers/media/platform/rcar_jpu.c
View File

@ -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,
};
/*

6
drivers/media/platform/rockchip/rga/rga.c
View File

@ -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

5
drivers/media/platform/s5p-g2d/g2d.c
View File

@ -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[];

7
drivers/media/platform/s5p-jpeg/jpeg-core.c
View File

@ -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,
};
/*

6
drivers/media/v4l2-core/v4l2-mem2mem.c
View File

@ -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);

2
include/media/v4l2-mem2mem.h
View File

@ -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.