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nvme: fix copy direction in DMA reads going to CMB 

`nvme_dma_read_prp` erronously used `qemu_iovec_*to*_buf` instead of
`qemu_iovec_*from*_buf` when the request involved the controller memory
buffer.

Signed-off-by: Klaus Birkelund Jensen <klaus.jensen@cnexlabs.com>
Reviewed-by: Kenneth Heitke <kenneth.heitke@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Klaus Birkelund Jensen 2019-05-18 09:39:05 +02:00 committed by Kevin Wolf
parent 832d78caa5
commit 25349e8250
1 changed files with 1 additions and 1 deletions
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2
hw/block/nvme.c
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@ -238,7 +238,7 @@ static uint16_t nvme_dma_read_prp(NvmeCtrl *n, uint8_t *ptr, uint32_t len,
}
qemu_sglist_destroy(&qsg);
} else {
if (unlikely(qemu_iovec_to_buf(&iov, 0, ptr, len) != len)) {
if (unlikely(qemu_iovec_from_buf(&iov, 0, ptr, len) != len)) {
trace_nvme_err_invalid_dma();
status = NVME_INVALID_FIELD | NVME_DNR;
}