Hello everyone,while trying to fix the regression in sur40.ko mentioned earlier, I noticed that apparently some other bits of the DMA pipeline have changed as well in the meantime.
The code bit in question in sur40.c currently looks as follows: sgt = vb2_dma_sg_plane_desc(&new_buf->vb.vb2_buf, 0); result = usb_sg_init(&sgr, sur40->usbdev, usb_rcvbulkpipe(sur40->usbdev, VIDEO_ENDPOINT), 0, sgt->sgl, sgt->nents, sur40->pix_fmt.sizeimage, GFP_KERNEL);However, when I put in some debug output, I noticed that sgt->nents is zero. Shouldn't that be initialized by vb2_dma_sg_plane_desc?
I tried to manually set it to 1 and got some partially-filled buffers back, so this seems the right way to go, but I couldn't find any other driver/example that uses this combination. Any hints very welcome.
Best, Florian -- SENT FROM MY DEC VT50 TERMINAL
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