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path: root/drivers/media/video/usbvision/usbvision-core.c
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Diffstat (limited to 'drivers/media/video/usbvision/usbvision-core.c')
-rw-r--r--drivers/media/video/usbvision/usbvision-core.c82
1 files changed, 53 insertions, 29 deletions
diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c
index 9118a6227ea6..7df071eb0a3b 100644
--- a/drivers/media/video/usbvision/usbvision-core.c
+++ b/drivers/media/video/usbvision/usbvision-core.c
@@ -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 */
@@ -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 {
@@ -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;
}
@@ -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;
@@ -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);
@@ -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);
@@ -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;
}
@@ -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;
@@ -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);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 10:30:24 +0000