diff options
| author | Jean-Francois Moine <moinejf@free.fr> | 2008-10-23 07:29:51 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-29 17:53:29 -0200 |
| commit | ff374747ce5357eedf034b44ec3111cec28d50d5 (patch) | |
| tree | a012bf91305dcd7f95ed9e62317700859982ea00 | |
| parent | 8fe2f1d522bb599eccfff6ef4fc55f7b7abbaeec (diff) | |
V4L/DVB (9545): gspca: Add a flag for empty ISOC packets.
- This flag is needed by some subdrivers as tv8532 for start
of frame detection.
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 6 | ||||
| -rw-r--r-- | drivers/media/video/gspca/gspca.h | 11 |
2 files changed, 11 insertions, 6 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index afddb18024a..8a528c97aae 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -150,8 +150,11 @@ static void fill_frame(struct gspca_dev *gspca_dev, /* check the packet status and length */ len = urb->iso_frame_desc[i].actual_length; - if (len == 0) + if (len == 0) { + if (gspca_dev->empty_packet == 0) + gspca_dev->empty_packet = 1; continue; + } st = urb->iso_frame_desc[i].status; if (st) { PDEBUG(D_ERR, @@ -1858,6 +1861,7 @@ int gspca_dev_probe(struct usb_interface *intf, gspca_dev->nbalt = intf->num_altsetting; gspca_dev->sd_desc = sd_desc; gspca_dev->nbufread = 2; + gspca_dev->empty_packet = -1; /* don't check the empty packets */ /* configure the subdriver and initialize the USB device */ ret = gspca_dev->sd_desc->config(gspca_dev, id); diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h index 2ae1ad7c148..50913caf187 100644 --- a/drivers/media/video/gspca/gspca.h +++ b/drivers/media/video/gspca/gspca.h @@ -142,22 +142,21 @@ struct gspca_dev { char fr_q; /* next frame to queue */ char fr_o; /* next frame to dequeue */ signed char fr_queue[GSPCA_MAX_FRAMES]; /* frame queue */ - char last_packet_type; + __u8 last_packet_type; + __s8 empty_packet; /* if (-1) don't check empty packets */ + __u8 streaming; - __u8 iface; /* USB interface number */ - __u8 alt; /* USB alternate setting */ __u8 curr_mode; /* current camera mode */ __u32 pixfmt; /* current mode parameters */ __u16 width; __u16 height; + __u32 sequence; /* frame sequence number */ atomic_t nevent; /* number of frames done */ wait_queue_head_t wq; /* wait queue */ struct mutex usb_lock; /* usb exchange protection */ struct mutex read_lock; /* read protection */ struct mutex queue_lock; /* ISOC queue protection */ - __u32 sequence; /* frame sequence number */ - char streaming; #ifdef CONFIG_PM char frozen; /* suspend - resume */ #endif @@ -166,6 +165,8 @@ struct gspca_dev { char nbufread; /* number of buffers for read() */ char nurbs; /* number of allocated URBs */ char memory; /* memory type (V4L2_MEMORY_xxx) */ + __u8 iface; /* USB interface number */ + __u8 alt; /* USB alternate setting */ __u8 nbalt; /* number of USB alternate settings */ }; |