lkml.org 
[lkml]   [2007]   [Dec]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: 2.6.24-rc5 "videobuf_read_start" [drivers/media/video/videobuf-dvb.ko] undefined!
    From
    Date

    Em Qua, 2007-12-12 às 23:19 +0100, Jean Delvare escreveu:
    > Hi Mauro,
    >
    > On Wed, 12 Dec 2007 12:21:56 -0200, Mauro Carvalho Chehab wrote:
    > > What happened is that changeset 19bc5133dae9562e8824ef101464061f9854c1d8
    > > fixed some bad locks.
    > >
    > > After this changeset, videobuf_read_stream() holds q->lock and calls
    > > videobuf_read_start(). To avoid waiting forever for the lock to be
    > > released, he removed the mutex from videobuf_read_start with this line
    > > [1]:
    > >
    > > - err = videobuf_mmap_setup(q, count, size, V4L2_MEMORY_USERPTR);
    > > + err = __videobuf_mmap_setup(q, count, size, V4L2_MEMORY_USERPTR);
    > >
    > > So, after the patch, videobuf_read_start() can't be safely called. So,
    > > just adding EXPORT_SYMBOL_GPL() breaks videobuf-dvb at runtime.
    > >
    > > The proper solution is provided by this changeset:
    > > http://git.kernel.org/?p=linux/kernel/git/mchehab/v4l-dvb.git;a=commitdiff;h=19fb1457990b6b7e15586ec7331541a184233acc
    >
    > There's a "static" missing in that patch: __videobuf_read_start is only
    > used internally.

    Thanks. It seems that I were not on my best day when I wrote this
    patch....

    Fixed.

    --
    Cheers,
    Mauro

    --
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2007-12-13 11:35    [W:0.021 / U:0.292 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site