D43098.diff
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D43098.diff
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	diff --git a/sys/dev/mpi3mr/mpi3mr_app.c b/sys/dev/mpi3mr/mpi3mr_app.c
	--- a/sys/dev/mpi3mr/mpi3mr_app.c
	+++ b/sys/dev/mpi3mr/mpi3mr_app.c
	@@ -543,6 +543,7 @@
	{
	U16 i, needed_desc = (dma_buffers->kern_buf_len / MPI3MR_IOCTL_SGE_SIZE);
	U32 buf_len = dma_buffers->kern_buf_len, copied_len = 0;
	+ int error;

	if (dma_buffers->kern_buf_len % MPI3MR_IOCTL_SGE_SIZE)
	needed_desc++;
	@@ -558,6 +559,7 @@
	if (!dma_buffers->dma_desc)
	return -1;

	+ error = 0;
	for (i = 0; i < needed_desc; i++, desc_count++) {

	dma_buffers->dma_desc[i].addr = sc->ioctl_sge[desc_count].addr;
	@@ -572,12 +574,19 @@
	memset(dma_buffers->dma_desc[i].addr, 0, sc->ioctl_sge[desc_count].size);

	if (dma_buffers->data_dir == MPI3MR_APP_DDO) {
	- copyin(((U8 *)dma_buffers->user_buf + copied_len),
	+ error = copyin(((U8 *)dma_buffers->user_buf + copied_len),
	dma_buffers->dma_desc[i].addr,
	dma_buffers->dma_desc[i].size);
	+ if (error != 0)
	+ break;
	copied_len += dma_buffers->dma_desc[i].size;
	}
	}
	+ if (error != 0) {
	+ printf("%s: DMA copyin error %d\n", __func__, error);
	+ free(dma_buffers->dma_desc, M_MPI3MR);
	+ return -1;
	+ }

	dma_buffers->num_dma_desc = needed_desc;