4.2.8-ckt8 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
This reverts commit 86766cbb550e28d2814231e82b7aeeeb4351106a.
Not suitable for 4.2: no max_burst.
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/spi/spi-rockchip.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 661a416..1d308cb 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -199,7 +199,6 @@ struct rockchip_spi {
struct sg_table rx_sg;
struct rockchip_spi_dma_data dma_rx;
struct rockchip_spi_dma_data dma_tx;
- struct dma_slave_caps dma_caps;
};
static inline void spi_enable_chip(struct rockchip_spi *rs, int enable)
@@ -455,10 +454,7 @@ static void rockchip_spi_prepare_dma(struct rockchip_spi *rs)
rxconf.direction = rs->dma_rx.direction;
rxconf.src_addr = rs->dma_rx.addr;
rxconf.src_addr_width = rs->n_bytes;
- if (rs->dma_caps.max_burst > 4)
- rxconf.src_maxburst = 4;
- else
- rxconf.src_maxburst = 1;
+ rxconf.src_maxburst = rs->n_bytes;
dmaengine_slave_config(rs->dma_rx.ch, &rxconf);
rxdesc = dmaengine_prep_slave_sg(
@@ -475,10 +471,7 @@ static void rockchip_spi_prepare_dma(struct rockchip_spi *rs)
txconf.direction = rs->dma_tx.direction;
txconf.dst_addr = rs->dma_tx.addr;
txconf.dst_addr_width = rs->n_bytes;
- if (rs->dma_caps.max_burst > 4)
- txconf.dst_maxburst = 4;
- else
- txconf.dst_maxburst = 1;
+ txconf.dst_maxburst = rs->n_bytes;
dmaengine_slave_config(rs->dma_tx.ch, &txconf);
txdesc = dmaengine_prep_slave_sg(
@@ -743,7 +736,6 @@ static int rockchip_spi_probe(struct platform_device *pdev)
}
if (rs->dma_tx.ch && rs->dma_rx.ch) {
- dma_get_slave_caps(rs->dma_rx.ch, &(rs->dma_caps));
rs->dma_tx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_TXDR);
rs->dma_rx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_RXDR);
rs->dma_tx.direction = DMA_MEM_TO_DEV;
--
2.7.4
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