diff options
| author | Jean-Francois Moine <moinejf@free.fr> | 2008-07-14 09:38:29 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-07-20 07:26:14 -0300 |
| commit | 739570bb218bb4607df1f197282561e97a98e54a (patch) | |
| tree | 25555dfe5ac873bc96866c486d6f6c1dcabf24f4 /drivers/media/video/gspca/gspca.c | |
| parent | 5b77ae7776183d733ec86727bcc34c52a336afd6 (diff) | |
V4L/DVB (8352): gspca: Buffers for USB exchanges cannot be in the stack.
gspca: Protect dq_callback() against simultaneous USB exchanges.
Temporary buffer for USB exchanges added in the device struct.
(all) Use a temporary buffer for all USB exchanges.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index a566fd39489..242f0fb68d6 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -1347,9 +1347,11 @@ ok: gspca_dev->fr_i, gspca_dev->fr_o); - if (gspca_dev->sd_desc->dq_callback) + if (gspca_dev->sd_desc->dq_callback) { + mutex_lock(&gspca_dev->usb_lock); gspca_dev->sd_desc->dq_callback(gspca_dev); - + mutex_unlock(&gspca_dev->usb_lock); + } return j; } |