diff options
| author | Peng Fan <[email protected]> | 2019-11-05 05:51:10 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2019-11-05 18:18:01 +0100 |
| commit | 487ee861de176090b055eba5b252b56a3b9973d6 (patch) | |
| tree | 4814f2d7f16e9fc675781b145eaf187a45660f91 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 879516870d7a8e7ec017efa9be49d86dd4e04d3b (diff) | |
tty: serial: fsl_lpuart: use the sg count from dma_map_sg
The dmaengine_prep_slave_sg needs to use sg count returned
by dma_map_sg, not use sport->dma_tx_nents, because the return
value of dma_map_sg is not always same with "nents".
When enabling iommu for lpuart + edma, iommu framework may concatenate
two sgs into one.
Fixes: 6250cc30c4c4e ("tty: serial: fsl_lpuart: Use scatter/gather DMA for Tx")
Cc: <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions