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[media] em28xx: rename isoc packet number constants and parameters 

Rename EM28XX_NUM_PACKETS to EM28XX_NUM_ISOC_PACKETS and
EM28XX_DVB_MAX_PACKETS to EM28XX_DVB_NUM_ISOC_PACKETS to
clarify that these values are used only for isoc usb transfers.
Also use the term num_packets instead of max_packets, as this
is how these values are used and called in struct urb.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Frank Schaefer 2012-11-08 14:11:35 -03:00 committed by Mauro Carvalho Chehab
parent 8c3015676f
commit 515688a898
5 changed files with 15 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/usb/em28xx/em28xx-cards.c
View File

@ -3323,7 +3323,7 @@ static int em28xx_usb_probe(struct usb_interface *interface,
if (has_dvb) {
/* pre-allocate DVB isoc transfer buffers */
retval = em28xx_alloc_isoc(dev, EM28XX_DIGITAL_MODE,
EM28XX_DVB_MAX_PACKETS,
EM28XX_DVB_NUM_ISOC_PACKETS,
EM28XX_DVB_NUM_BUFS,
dev->dvb_max_pkt_size);
if (retval) {

8
drivers/media/usb/em28xx/em28xx-core.c
View File

@ -1034,7 +1034,7 @@ EXPORT_SYMBOL_GPL(em28xx_stop_urbs);
* Allocate URBs
*/
int em28xx_alloc_isoc(struct em28xx *dev, enum em28xx_mode mode,
int max_packets, int num_bufs, int max_pkt_size)
int num_packets, int num_bufs, int max_pkt_size)
{
struct em28xx_usb_isoc_bufs *isoc_bufs;
int i;
@ -1069,7 +1069,7 @@ int em28xx_alloc_isoc(struct em28xx *dev, enum em28xx_mode mode,
}
isoc_bufs->max_pkt_size = max_pkt_size;
isoc_bufs->num_packets = max_packets;
isoc_bufs->num_packets = num_packets;
dev->isoc_ctl.vid_buf = NULL;
dev->isoc_ctl.vbi_buf = NULL;
@ -1129,7 +1129,7 @@ EXPORT_SYMBOL_GPL(em28xx_alloc_isoc);
* Allocate URBs and start IRQ
*/
int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode,
int max_packets, int num_bufs, int max_pkt_size,
int num_packets, int num_bufs, int max_pkt_size,
int (*isoc_copy) (struct em28xx *dev, struct urb *urb))
{
struct em28xx_dmaqueue *dma_q = &dev->vidq;
@ -1153,7 +1153,7 @@ int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode,
}
if (alloc) {
rc = em28xx_alloc_isoc(dev, mode, max_packets,
rc = em28xx_alloc_isoc(dev, mode, num_packets,
num_bufs, max_pkt_size);
if (rc)
return rc;

5
drivers/media/usb/em28xx/em28xx-dvb.c
View File

@ -173,11 +173,12 @@ static int em28xx_start_streaming(struct em28xx_dvb *dvb)
return max_dvb_packet_size;
dprintk(1, "Using %d buffers each with %d x %d bytes\n",
EM28XX_DVB_NUM_BUFS,
EM28XX_DVB_MAX_PACKETS,
EM28XX_DVB_NUM_ISOC_PACKETS,
max_dvb_packet_size);
return em28xx_init_isoc(dev, EM28XX_DIGITAL_MODE,
EM28XX_DVB_MAX_PACKETS, EM28XX_DVB_NUM_BUFS,
EM28XX_DVB_NUM_ISOC_PACKETS,
EM28XX_DVB_NUM_BUFS,
max_dvb_packet_size, em28xx_dvb_isoc_copy);
}

4
drivers/media/usb/em28xx/em28xx-video.c
View File

@ -764,13 +764,13 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
if (urb_init) {
if (em28xx_vbi_supported(dev) == 1)
rc = em28xx_init_isoc(dev, EM28XX_ANALOG_MODE,
EM28XX_NUM_PACKETS,
EM28XX_NUM_ISOC_PACKETS,
EM28XX_NUM_BUFS,
dev->max_pkt_size,
em28xx_isoc_copy_vbi);
else
rc = em28xx_init_isoc(dev, EM28XX_ANALOG_MODE,
EM28XX_NUM_PACKETS,
EM28XX_NUM_ISOC_PACKETS,
EM28XX_NUM_BUFS,
dev->max_pkt_size,
em28xx_isoc_copy);

10
drivers/media/usb/em28xx/em28xx.h
View File

@ -157,12 +157,12 @@
#define EM28XX_NUM_BUFS 5
#define EM28XX_DVB_NUM_BUFS 5
/* number of packets for each buffer
/* isoc transfers: number of packets for each buffer
windows requests only 64 packets .. so we better do the same
this is what I found out for all alternate numbers there!
*/
#define EM28XX_NUM_PACKETS 64
#define EM28XX_DVB_MAX_PACKETS 64
#define EM28XX_NUM_ISOC_PACKETS 64
#define EM28XX_DVB_NUM_ISOC_PACKETS 64
#define EM28XX_INTERLACED_DEFAULT 1
@ -667,9 +667,9 @@ int em28xx_set_outfmt(struct em28xx *dev);
int em28xx_resolution_set(struct em28xx *dev);
int em28xx_set_alternate(struct em28xx *dev);
int em28xx_alloc_isoc(struct em28xx *dev, enum em28xx_mode mode,
int max_packets, int num_bufs, int max_pkt_size);
int num_packets, int num_bufs, int max_pkt_size);
int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode,
int max_packets, int num_bufs, int max_pkt_size,
int num_packets, int num_bufs, int max_pkt_size,
int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
void em28xx_uninit_isoc(struct em28xx *dev, enum em28xx_mode mode);
void em28xx_stop_urbs(struct em28xx *dev);