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spi: rockchip-sfc: Remove redundant IO operations

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Coherent dma buffer is uncached and memcpy is enough.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Link: https://lore.kernel.org/r/20210821124925.6066-1-jon.lin@rock-chips.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jon Lin 2021-08-21 20:49:25 +08:00 committed by Mark Brown
parent 7a4697b201
commit 8d00f98194
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-rockchip-sfc.c
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@ -453,7 +453,7 @@ static int rockchip_sfc_xfer_data_dma(struct rockchip_sfc *sfc,
dev_dbg(sfc->dev, "sfc xfer_dma len=%x\n", len);
if (op->data.dir == SPI_MEM_DATA_OUT)
memcpy_toio(sfc->buffer, op->data.buf.out, len);
memcpy(sfc->buffer, op->data.buf.out, len);
ret = rockchip_sfc_fifo_transfer_dma(sfc, sfc->dma_buffer, len);
if (!wait_for_completion_timeout(&sfc->cp, msecs_to_jiffies(2000))) {
@ -462,7 +462,7 @@ static int rockchip_sfc_xfer_data_dma(struct rockchip_sfc *sfc,
}
rockchip_sfc_irq_mask(sfc, SFC_IMR_DMA);
if (op->data.dir == SPI_MEM_DATA_IN)
memcpy_fromio(op->data.buf.in, sfc->buffer, len);
memcpy(op->data.buf.in, sfc->buffer, len);
return ret;
}