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author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2010-12-25 17:40:26 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-12-30 22:29:26 -0200 |
commit | b6a633c18ba83c0c8e96759a31d356bfb77e2b5f (patch) | |
tree | 28e006e9006142d80b512fdd1c4290c43543c45e | |
parent | c85bb69af09988f728aca825c11267c9d06ba32e (diff) | |
download | kernel_samsung_crespo-b6a633c18ba83c0c8e96759a31d356bfb77e2b5f.zip kernel_samsung_crespo-b6a633c18ba83c0c8e96759a31d356bfb77e2b5f.tar.gz kernel_samsung_crespo-b6a633c18ba83c0c8e96759a31d356bfb77e2b5f.tar.bz2 |
[media] v4l: soc-camera: switch to .unlocked_ioctl
Use the V4L mutex infrastructure in soc-camera core and drivers and switch to
.unlocked_ioctl.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r-- | drivers/media/video/mx1_camera.c | 7 | ||||
-rw-r--r-- | drivers/media/video/mx2_camera.c | 3 | ||||
-rw-r--r-- | drivers/media/video/mx3_camera.c | 2 | ||||
-rw-r--r-- | drivers/media/video/omap1_camera.c | 4 | ||||
-rw-r--r-- | drivers/media/video/pxa_camera.c | 2 | ||||
-rw-r--r-- | drivers/media/video/sh_mobile_ceu_camera.c | 2 | ||||
-rw-r--r-- | drivers/media/video/soc_camera.c | 47 |
7 files changed, 19 insertions, 48 deletions
diff --git a/drivers/media/video/mx1_camera.c b/drivers/media/video/mx1_camera.c index 5e486a8..bc0c23a 100644 --- a/drivers/media/video/mx1_camera.c +++ b/drivers/media/video/mx1_camera.c @@ -382,10 +382,9 @@ static void mx1_camera_init_videobuf(struct videobuf_queue *q, struct mx1_camera_dev *pcdev = ici->priv; videobuf_queue_dma_contig_init(q, &mx1_videobuf_ops, icd->dev.parent, - &pcdev->lock, - V4L2_BUF_TYPE_VIDEO_CAPTURE, - V4L2_FIELD_NONE, - sizeof(struct mx1_buffer), icd, NULL); + &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, + V4L2_FIELD_NONE, + sizeof(struct mx1_buffer), icd, &icd->video_lock); } static int mclk_get_divisor(struct mx1_camera_dev *pcdev) diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c index 13565cb..4eab1c6 100644 --- a/drivers/media/video/mx2_camera.c +++ b/drivers/media/video/mx2_camera.c @@ -683,7 +683,8 @@ static void mx2_camera_init_videobuf(struct videobuf_queue *q, videobuf_queue_dma_contig_init(q, &mx2_videobuf_ops, pcdev->dev, &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, - V4L2_FIELD_NONE, sizeof(struct mx2_buffer), icd, NULL); + V4L2_FIELD_NONE, sizeof(struct mx2_buffer), + icd, &icd->video_lock); } #define MX2_BUS_FLAGS (SOCAM_DATAWIDTH_8 | \ diff --git a/drivers/media/video/mx3_camera.c b/drivers/media/video/mx3_camera.c index 330d42e..b9cb4a4 100644 --- a/drivers/media/video/mx3_camera.c +++ b/drivers/media/video/mx3_camera.c @@ -443,7 +443,7 @@ static void mx3_camera_init_videobuf(struct videobuf_queue *q, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, sizeof(struct mx3_camera_buffer), icd, - NULL); + &icd->video_lock); } /* First part of ipu_csi_init_interface() */ diff --git a/drivers/media/video/omap1_camera.c b/drivers/media/video/omap1_camera.c index cbfd07f..0a2fb2b 100644 --- a/drivers/media/video/omap1_camera.c +++ b/drivers/media/video/omap1_camera.c @@ -1365,12 +1365,12 @@ static void omap1_cam_init_videobuf(struct videobuf_queue *q, videobuf_queue_dma_contig_init(q, &omap1_videobuf_ops, icd->dev.parent, &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, - sizeof(struct omap1_cam_buf), icd, NULL); + sizeof(struct omap1_cam_buf), icd, &icd->video_lock); else videobuf_queue_sg_init(q, &omap1_videobuf_ops, icd->dev.parent, &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, - sizeof(struct omap1_cam_buf), icd, NULL); + sizeof(struct omap1_cam_buf), icd, &icd->video_lock); /* use videobuf mode (auto)selected with the module parameter */ pcdev->vb_mode = sg_mode ? OMAP1_CAM_DMA_SG : OMAP1_CAM_DMA_CONTIG; diff --git a/drivers/media/video/pxa_camera.c b/drivers/media/video/pxa_camera.c index c143ed0..0268677 100644 --- a/drivers/media/video/pxa_camera.c +++ b/drivers/media/video/pxa_camera.c @@ -852,7 +852,7 @@ static void pxa_camera_init_videobuf(struct videobuf_queue *q, */ videobuf_queue_sg_init(q, &pxa_videobuf_ops, NULL, &pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, - sizeof(struct pxa_buffer), icd, NULL); + sizeof(struct pxa_buffer), icd, &icd->video_lock); } static u32 mclk_get_divisor(struct platform_device *pdev, diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c index 2486520..954222b 100644 --- a/drivers/media/video/sh_mobile_ceu_camera.c +++ b/drivers/media/video/sh_mobile_ceu_camera.c @@ -1786,7 +1786,7 @@ static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, V4L2_BUF_TYPE_VIDEO_CAPTURE, pcdev->field, sizeof(struct sh_mobile_ceu_buffer), - icd, NULL); + icd, &icd->video_lock); } static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c index 052bd6d..aba4ce9 100644 --- a/drivers/media/video/soc_camera.c +++ b/drivers/media/video/soc_camera.c @@ -352,12 +352,6 @@ static int soc_camera_open(struct file *file) return -EINVAL; } - /* - * Protect against icd->ops->remove() until we module_get() both - * drivers. - */ - mutex_lock(&icd->video_lock); - icd->use_count++; /* Now we really have to activate the camera */ @@ -412,8 +406,6 @@ static int soc_camera_open(struct file *file) file->private_data = icd; dev_dbg(&icd->dev, "camera device open\n"); - mutex_unlock(&icd->video_lock); - return 0; /* @@ -429,7 +421,6 @@ eiciadd: icl->power(icd->pdev, 0); epower: icd->use_count--; - mutex_unlock(&icd->video_lock); module_put(ici->ops->owner); return ret; @@ -440,7 +431,6 @@ static int soc_camera_close(struct file *file) struct soc_camera_device *icd = file->private_data; struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); - mutex_lock(&icd->video_lock); icd->use_count--; if (!icd->use_count) { struct soc_camera_link *icl = to_soc_camera_link(icd); @@ -457,8 +447,6 @@ static int soc_camera_close(struct file *file) if (icd->streamer == file) icd->streamer = NULL; - mutex_unlock(&icd->video_lock); - module_put(ici->ops->owner); dev_dbg(&icd->dev, "camera device close\n"); @@ -517,7 +505,7 @@ static struct v4l2_file_operations soc_camera_fops = { .owner = THIS_MODULE, .open = soc_camera_open, .release = soc_camera_close, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, .read = soc_camera_read, .mmap = soc_camera_mmap, .poll = soc_camera_poll, @@ -534,12 +522,9 @@ static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, if (icd->streamer && icd->streamer != file) return -EBUSY; - mutex_lock(&icd->vb_vidq.vb_lock); - if (icd->vb_vidq.bufs[0]) { dev_err(&icd->dev, "S_FMT denied: queue initialised\n"); - ret = -EBUSY; - goto unlock; + return -EBUSY; } ret = soc_camera_set_fmt(icd, f); @@ -547,9 +532,6 @@ static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, if (!ret && !icd->streamer) icd->streamer = file; -unlock: - mutex_unlock(&icd->vb_vidq.vb_lock); - return ret; } @@ -622,15 +604,11 @@ static int soc_camera_streamon(struct file *file, void *priv, if (icd->streamer != file) return -EBUSY; - mutex_lock(&icd->video_lock); - v4l2_subdev_call(sd, video, s_stream, 1); /* This calls buf_queue from host driver's videobuf_queue_ops */ ret = videobuf_streamon(&icd->vb_vidq); - mutex_unlock(&icd->video_lock); - return ret; } @@ -648,8 +626,6 @@ static int soc_camera_streamoff(struct file *file, void *priv, if (icd->streamer != file) return -EBUSY; - mutex_lock(&icd->video_lock); - /* * This calls buf_release from host driver's videobuf_queue_ops for all * remaining buffers. When the last buffer is freed, stop capture @@ -658,8 +634,6 @@ static int soc_camera_streamoff(struct file *file, void *priv, v4l2_subdev_call(sd, video, s_stream, 0); - mutex_unlock(&icd->video_lock); - return 0; } @@ -748,9 +722,7 @@ static int soc_camera_g_crop(struct file *file, void *fh, struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); int ret; - mutex_lock(&icd->vb_vidq.vb_lock); ret = ici->ops->get_crop(icd, a); - mutex_unlock(&icd->vb_vidq.vb_lock); return ret; } @@ -775,9 +747,6 @@ static int soc_camera_s_crop(struct file *file, void *fh, dev_dbg(&icd->dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, rect->left, rect->top); - /* Cropping is allowed during a running capture, guard consistency */ - mutex_lock(&icd->vb_vidq.vb_lock); - /* If get_crop fails, we'll let host and / or client drivers decide */ ret = ici->ops->get_crop(icd, ¤t_crop); @@ -795,8 +764,6 @@ static int soc_camera_s_crop(struct file *file, void *fh, ret = ici->ops->set_crop(icd, a); } - mutex_unlock(&icd->vb_vidq.vb_lock); - return ret; } @@ -998,7 +965,13 @@ static int soc_camera_probe(struct device *dev) icd->field = V4L2_FIELD_ANY; - /* ..._video_start() will create a device node, so we have to protect */ + icd->vdev->lock = &icd->video_lock; + + /* + * ..._video_start() will create a device node, video_register_device() + * itself is protected against concurrent open() calls, but we also have + * to protect our data. + */ mutex_lock(&icd->video_lock); ret = soc_camera_video_start(icd); @@ -1063,10 +1036,8 @@ static int soc_camera_remove(struct device *dev) BUG_ON(!dev->parent); if (vdev) { - mutex_lock(&icd->video_lock); video_unregister_device(vdev); icd->vdev = NULL; - mutex_unlock(&icd->video_lock); } if (icl->board_info) { |