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V4L/DVB (5720): Usbvision: fix urb allocation and submits
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- fixed the urb allocation part that was not taking into account the current alternate setting
  this fixes usb_submit_urb returning -90 errno in isocIrq.
- fixed usb_submit_urb returning -1 errno in isocIrq (need to ignore usb urb with status==-ENOENT)
Acked-by: Dwaine P. Garden <dwainegarden@rogers.com>

Signed-off-by: Thierry Merle <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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Thierry Merle authored and Mauro Carvalho Chehab committed Jun 8, 2007
1 parent c660415 commit fe818d1
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Showing 2 changed files with 53 additions and 30 deletions.
82 changes: 53 additions & 29 deletions drivers/media/video/usbvision/usbvision-core.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1414,6 +1414,11 @@ static void usbvision_isocIrq(struct urb *urb)
if (!USBVISION_IS_OPERATIONAL(usbvision))
return;

/* any urb with wrong status is ignored without acknowledgement */
if (urb->status == -ENOENT) {
return;
}

f = &usbvision->curFrame;

/* Manage streaming interruption */
Expand All @@ -1436,18 +1441,21 @@ static void usbvision_isocIrq(struct urb *urb)
if (usbvision->streaming == Stream_On) {

/* If we collected enough data let's parse! */
if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH) { /* 12 == header_length */
/*If we don't have a frame we're current working on, complain */
if(!list_empty(&(usbvision->inqueue))) {
if (!(*f)) {
(*f) = list_entry(usbvision->inqueue.next,struct usbvision_frame, frame);
}
usbvision_parse_data(usbvision);
}
else {
PDEBUG(DBG_IRQ, "received data, but no one needs it");
scratch_reset(usbvision);
if ((scratch_len(usbvision) > USBVISION_HEADER_LENGTH) &&
(!list_empty(&(usbvision->inqueue))) ) {
if (!(*f)) {
(*f) = list_entry(usbvision->inqueue.next,
struct usbvision_frame,
frame);
}
usbvision_parse_data(usbvision);
}
else {
/*If we don't have a frame
we're current working on, complain */
PDEBUG(DBG_IRQ,
"received data, but no one needs it");
scratch_reset(usbvision);
}
}
else {
Expand All @@ -1466,10 +1474,10 @@ static void usbvision_isocIrq(struct urb *urb)
urb->dev = usbvision->dev;
errCode = usb_submit_urb (urb, GFP_ATOMIC);

/* Disable this warning. By design of the driver. */
// if(errCode) {
// err("%s: usb_submit_urb failed: error %d", __FUNCTION__, errCode);
// }
if(errCode) {
err("%s: usb_submit_urb failed: error %d",
__FUNCTION__, errCode);
}

return;
}
Expand Down Expand Up @@ -2394,7 +2402,7 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
{
struct usb_device *dev = usbvision->dev;
int bufIdx, errCode, regValue;
const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
int sb_size;

if (!USBVISION_IS_OPERATIONAL(usbvision))
return -EFAULT;
Expand All @@ -2408,11 +2416,14 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
usbvision->last_error = errCode;
return -EBUSY;
}
sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize;

regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
regValue = (16 - usbvision_read_reg(usbvision,
USBVISION_ALTER_REG)) & 0x0F;

usbvision->usb_bandwidth = regValue >> 1;
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec",
usbvision->usb_bandwidth);



Expand All @@ -2428,7 +2439,11 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
return -ENOMEM;
}
usbvision->sbuf[bufIdx].urb = urb;
usbvision->sbuf[bufIdx].data = usb_buffer_alloc(usbvision->dev, sb_size, GFP_KERNEL,&urb->transfer_dma);
usbvision->sbuf[bufIdx].data =
usb_buffer_alloc(usbvision->dev,
sb_size,
GFP_KERNEL,
&urb->transfer_dma);
urb->dev = dev;
urb->context = usbvision;
urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp);
Expand All @@ -2442,21 +2457,26 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
for (j = k = 0; j < USBVISION_URB_FRAMES; j++,
k += usbvision->isocPacketSize) {
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length = usbvision->isocPacketSize;
urb->iso_frame_desc[j].length =
usbvision->isocPacketSize;
}
}


/* Submit all URBs */
for (bufIdx = 0; bufIdx < USBVISION_NUMSBUF; bufIdx++) {
errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb, GFP_KERNEL);
errCode = usb_submit_urb(usbvision->sbuf[bufIdx].urb,
GFP_KERNEL);
if (errCode) {
err("%s: usb_submit_urb(%d) failed: error %d", __FUNCTION__, bufIdx, errCode);
err("%s: usb_submit_urb(%d) failed: error %d",
__FUNCTION__, bufIdx, errCode);
}
}

usbvision->streaming = Stream_Idle;
PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", __FUNCTION__, usbvision->video_endp);
PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x",
__FUNCTION__,
usbvision->video_endp);
return 0;
}

Expand All @@ -2470,7 +2490,7 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
void usbvision_stop_isoc(struct usb_usbvision *usbvision)
{
int bufIdx, errCode, regValue;
const int sb_size = USBVISION_URB_FRAMES * USBVISION_MAX_ISOC_PACKET_SIZE;
int sb_size = USBVISION_URB_FRAMES * usbvision->isocPacketSize;

if ((usbvision->streaming == Stream_Off) || (usbvision->dev == NULL))
return;
Expand Down Expand Up @@ -2499,15 +2519,19 @@ void usbvision_stop_isoc(struct usb_usbvision *usbvision)
errCode = usb_set_interface(usbvision->dev, usbvision->iface,
usbvision->ifaceAlt);
if (errCode < 0) {
err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode);
err("%s: usb_set_interface() failed: error %d",
__FUNCTION__, errCode);
usbvision->last_error = errCode;
}
regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
regValue = (16-usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
usbvision->isocPacketSize =
(regValue == 0) ? 0 : (regValue * 64) - 1;
PDEBUG(DBG_ISOC, "ISO Packet Length:%d",
usbvision->isocPacketSize);

usbvision->usb_bandwidth = regValue >> 1;
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec",
usbvision->usb_bandwidth);
}
}

Expand Down
1 change: 0 additions & 1 deletion drivers/media/video/usbvision/usbvision.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -146,7 +146,6 @@
#define USBVISION_CLIPMASK_SIZE (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) //bytesize of clipmask

#define USBVISION_URB_FRAMES 32
#define USBVISION_MAX_ISOC_PACKET_SIZE 959 // NT1003 Specs Document says 1023

#define USBVISION_NUM_HEADERMARKER 20
#define USBVISION_NUMFRAMES 3 /* Maximum number of frames an application can get */
Expand Down

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