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| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-01-13 19:40:30 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-01-25 19:04:57 -0200 |
| commit | 1f8d30083abc17897b897787c39d446eb9d99fe0 (patch) | |
| tree | 5f286b1c8b2d95446cba0b8f9e3834fc27528d25 /drivers/media | |
| parent | dfd8c04ec14b88bc2849e62d6ff9e36f31352b60 (diff) | |
| download | linux-1f8d30083abc17897b897787c39d446eb9d99fe0.tar.gz linux-1f8d30083abc17897b897787c39d446eb9d99fe0.tar.bz2 linux-1f8d30083abc17897b897787c39d446eb9d99fe0.zip | |
V4L/DVB (7023): Fix a regresion left by changeset 7e65d6e8f6df
Changeset 7e65d6e8f6df removed a very bad hack on mmap(). However, the fixes
weren't considering usermap and overlay memory models. This were breaking
direct reading from /dev/video?, used mostly by mpeg aware drivers.
Thanks to Steven Toth <stoth@linuxtv.org> for reporting the issue and
bissecting it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/videobuf-core.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c index c3adbd686ffe..80a14da9acef 100644 --- a/drivers/media/video/videobuf-core.c +++ b/drivers/media/video/videobuf-core.c @@ -102,10 +102,14 @@ int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb, since mmap_mapper() method should be called before _iolock. On some cases, the mmap_mapper() is called only after scheduling. */ - wait_event_timeout(vb->done, q->is_mmapped, msecs_to_jiffies(100)); - if (!q->is_mmapped) { - printk(KERN_ERR "Error: mmap_mapper() never called!\n"); - return -EINVAL; + if (vb->memory == V4L2_MEMORY_MMAP) { + wait_event_timeout(vb->done, q->is_mmapped, + msecs_to_jiffies(100)); + if (!q->is_mmapped) { + printk(KERN_ERR + "Error: mmap_mapper() never called!\n"); + return -EINVAL; + } } return CALL(q, iolock, q, vb, fbuf); |