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| author | Hans de Goede <hdegoede@redhat.com> | 2010-12-31 07:41:54 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-01-19 11:44:59 -0200 |
| commit | ce5610bca74571674c1970d33063e7c06295a9a4 (patch) | |
| tree | 18d3c2db4f357767e8d189e68e8089b524d7230b /drivers/media/video/gspca/gspca.c | |
| parent | ee3629914b2b115f00f4197e80b1e7cb12881059 (diff) | |
| download | linux-ce5610bca74571674c1970d33063e7c06295a9a4.tar.bz2 | |
[media] gspca_main: Allow switching from read to mmap / userptr mode
Some applications (xawtv, qv4l2) mix read and mmap calls. Allow switching
from read mode back to mmap mode (by doing a reqbufs).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index 244fb76eaead..4ab906be8962 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -1497,6 +1497,7 @@ static int vidioc_reqbufs(struct file *file, void *priv, return -ERESTARTSYS; if (gspca_dev->memory != GSPCA_MEMORY_NO + && gspca_dev->memory != GSPCA_MEMORY_READ && gspca_dev->memory != rb->memory) { ret = -EBUSY; goto out; @@ -1525,6 +1526,9 @@ static int vidioc_reqbufs(struct file *file, void *priv, gspca_stream_off(gspca_dev); mutex_unlock(&gspca_dev->usb_lock); } + /* Don't restart the stream when switching from read to mmap mode */ + if (gspca_dev->memory == GSPCA_MEMORY_READ) + streaming = 0; /* free the previous allocated buffers, if any */ if (gspca_dev->nframes != 0) |