media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt

commit b2469c814fbc8f1f19676dd4912717b798df511e upstream.

Don't duplicate the buffer type checks in enum/g/s/try_fmt.
The check_fmt function does that already.

It is hard to keep the checks in sync for all these functions and
in fact the check for VBI was wrong in the _fmt functions as it
allowed SDR types as well. This caused a v4l2-compliance failure
for /dev/swradio0 using vivid.

This simplifies the code and keeps the check in one place and
fixes the SDR/VBI bug.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 79614992ee21776f475b0fcf1d2a9296e7c4dfa2..01c3fa44725aa62f6e1d1f393db48f90a898809a 100644 (file)
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1311,52 +1311,50 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
                                struct file *file, void *fh, void *arg)
 {
        struct v4l2_fmtdesc *p = arg;
-       struct video_device *vfd = video_devdata(file);
-       bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
-       bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
-       bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
-       bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
-       bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
-       int ret = -EINVAL;
+       int ret = check_fmt(file, p->type);
+
+       if (ret)
+               return ret;
+       ret = -EINVAL;
 
        switch (p->type) {
        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-               if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_enum_fmt_vid_cap))
+               if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
                        break;
                ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
                break;
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane))
+               if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane))
                        break;
                ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg);
                break;
        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay))
+               if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
                        break;
                ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
                break;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out))
+               if (unlikely(!ops->vidioc_enum_fmt_vid_out))
                        break;
                ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
                break;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane))
+               if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane))
                        break;
                ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg);
                break;
        case V4L2_BUF_TYPE_SDR_CAPTURE:
-               if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap))
+               if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
                        break;
                ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
                break;
        case V4L2_BUF_TYPE_SDR_OUTPUT:
-               if (unlikely(!is_tx || !is_sdr || !ops->vidioc_enum_fmt_sdr_out))
+               if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
                        break;
                ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
                break;
        case V4L2_BUF_TYPE_META_CAPTURE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_meta_cap))
+               if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
                        break;
                ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
                break;
@@ -1370,13 +1368,10 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
                                struct file *file, void *fh, void *arg)
 {
        struct v4l2_format *p = arg;
-       struct video_device *vfd = video_devdata(file);
-       bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
-       bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
-       bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
-       bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
-       bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
-       int ret;
+       int ret = check_fmt(file, p->type);
+
+       if (ret)
+               return ret;
 
        /*
         * fmt can't be cleared for these overlay types due to the 'clips'
@@ -1404,7 +1399,7 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
 
        switch (p->type) {
        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-               if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_g_fmt_vid_cap))
+               if (unlikely(!ops->vidioc_g_fmt_vid_cap))
                        break;
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
@@ -1412,23 +1407,15 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                return ret;
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane))
-                       break;
                return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay))
-                       break;
                return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_CAPTURE:
-               if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap))
-                       break;
                return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
        case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-               if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap))
-                       break;
                return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out))
+               if (unlikely(!ops->vidioc_g_fmt_vid_out))
                        break;
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
@@ -1436,32 +1423,18 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                return ret;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane))
-                       break;
                return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay))
-                       break;
                return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_OUTPUT:
-               if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out))
-                       break;
                return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
        case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-               if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out))
-                       break;
                return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
        case V4L2_BUF_TYPE_SDR_CAPTURE:
-               if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap))
-                       break;
                return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
        case V4L2_BUF_TYPE_SDR_OUTPUT:
-               if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out))
-                       break;
                return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
        case V4L2_BUF_TYPE_META_CAPTURE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_meta_cap))
-                       break;
                return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
        }
        return -EINVAL;
@@ -1487,12 +1460,10 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
 {
        struct v4l2_format *p = arg;
        struct video_device *vfd = video_devdata(file);
-       bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
-       bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
-       bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
-       bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
-       bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
-       int ret;
+       int ret = check_fmt(file, p->type);
+
+       if (ret)
+               return ret;
 
        ret = v4l_enable_media_source(vfd);
        if (ret)
@@ -1501,37 +1472,37 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
 
        switch (p->type) {
        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-               if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_s_fmt_vid_cap))
+               if (unlikely(!ops->vidioc_s_fmt_vid_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix);
                ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
                /* just in case the driver zeroed it again */
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
-               if (is_tch)
+               if (vfd->vfl_type == VFL_TYPE_TOUCH)
                        v4l_pix_format_touch(&p->fmt.pix);
                return ret;
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane))
+               if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
                return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay))
+               if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.win);
                return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_CAPTURE:
-               if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap))
+               if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.vbi);
                return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
        case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-               if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap))
+               if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sliced);
                return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out))
+               if (unlikely(!ops->vidioc_s_fmt_vid_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix);
                ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
@@ -1539,37 +1510,37 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                return ret;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane))
+               if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
                return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay))
+               if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.win);
                return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_OUTPUT:
-               if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out))
+               if (unlikely(!ops->vidioc_s_fmt_vbi_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.vbi);
                return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
        case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-               if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out))
+               if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sliced);
                return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
        case V4L2_BUF_TYPE_SDR_CAPTURE:
-               if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap))
+               if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sdr);
                return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
        case V4L2_BUF_TYPE_SDR_OUTPUT:
-               if (unlikely(!is_tx || !is_sdr || !ops->vidioc_s_fmt_sdr_out))
+               if (unlikely(!ops->vidioc_s_fmt_sdr_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sdr);
                return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
        case V4L2_BUF_TYPE_META_CAPTURE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_meta_cap))
+               if (unlikely(!ops->vidioc_s_fmt_meta_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.meta);
                return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
@@ -1581,19 +1552,16 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
                                struct file *file, void *fh, void *arg)
 {
        struct v4l2_format *p = arg;
-       struct video_device *vfd = video_devdata(file);
-       bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER;
-       bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
-       bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
-       bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
-       bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
-       int ret;
+       int ret = check_fmt(file, p->type);
+
+       if (ret)
+               return ret;
 
        v4l_sanitize_format(p);
 
        switch (p->type) {
        case V4L2_BUF_TYPE_VIDEO_CAPTURE:
-               if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_try_fmt_vid_cap))
+               if (unlikely(!ops->vidioc_try_fmt_vid_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix);
                ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
@@ -1601,27 +1569,27 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                return ret;
        case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane))
+               if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
                return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OVERLAY:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay))
+               if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.win);
                return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_CAPTURE:
-               if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap))
+               if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.vbi);
                return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
        case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
-               if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap))
+               if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sliced);
                return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OUTPUT:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out))
+               if (unlikely(!ops->vidioc_try_fmt_vid_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix);
                ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
@@ -1629,37 +1597,37 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
                p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
                return ret;
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane))
+               if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
                return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
        case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
-               if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay))
+               if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.win);
                return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
        case V4L2_BUF_TYPE_VBI_OUTPUT:
-               if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out))
+               if (unlikely(!ops->vidioc_try_fmt_vbi_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.vbi);
                return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
        case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
-               if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out))
+               if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sliced);
                return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
        case V4L2_BUF_TYPE_SDR_CAPTURE:
-               if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap))
+               if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sdr);
                return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
        case V4L2_BUF_TYPE_SDR_OUTPUT:
-               if (unlikely(!is_tx || !is_sdr || !ops->vidioc_try_fmt_sdr_out))
+               if (unlikely(!ops->vidioc_try_fmt_sdr_out))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.sdr);
                return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
        case V4L2_BUF_TYPE_META_CAPTURE:
-               if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_meta_cap))
+               if (unlikely(!ops->vidioc_try_fmt_meta_cap))
                        break;
                CLEAR_AFTER_FIELD(p, fmt.meta);
                return ops->vidioc_try_fmt_meta_cap(file, fh, arg);