diff options
| author | Hsin-Yi Wang <hsinyi@chromium.org> | 2019-02-15 17:02:02 +0800 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2019-03-12 14:09:15 +0100 |
| commit | bc1a7f75c85e226e82f183d30d75c357f92b6029 (patch) | |
| tree | 1ec5d5103ce20805a6f168e8cf81ba2c5e18c35c /drivers/i2c | |
| parent | ea295481b6e313b4ea3ca2720ffcafd6005b5643 (diff) | |
i2c: mediatek: modify threshold passed to i2c_get_dma_safe_msg_buf()
DMA with zero-length transfers doesn't make sense and this HW doesn't
support them at all, so increase the threshold.
Fixes: fc66b39fe36a ("i2c: mediatek: Use DMA safe buffers for i2c transactions")
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
[wsa: reworded commit message]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-mt65xx.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 660de1ee68ed..684d651612b3 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -503,7 +503,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, writel(I2C_DMA_INT_FLAG_NONE, i2c->pdmabase + OFFSET_INT_FLAG); writel(I2C_DMA_CON_RX, i2c->pdmabase + OFFSET_CON); - dma_rd_buf = i2c_get_dma_safe_msg_buf(msgs, 0); + dma_rd_buf = i2c_get_dma_safe_msg_buf(msgs, 1); if (!dma_rd_buf) return -ENOMEM; @@ -526,7 +526,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, writel(I2C_DMA_INT_FLAG_NONE, i2c->pdmabase + OFFSET_INT_FLAG); writel(I2C_DMA_CON_TX, i2c->pdmabase + OFFSET_CON); - dma_wr_buf = i2c_get_dma_safe_msg_buf(msgs, 0); + dma_wr_buf = i2c_get_dma_safe_msg_buf(msgs, 1); if (!dma_wr_buf) return -ENOMEM; @@ -549,7 +549,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, writel(I2C_DMA_CLR_FLAG, i2c->pdmabase + OFFSET_INT_FLAG); writel(I2C_DMA_CLR_FLAG, i2c->pdmabase + OFFSET_CON); - dma_wr_buf = i2c_get_dma_safe_msg_buf(msgs, 0); + dma_wr_buf = i2c_get_dma_safe_msg_buf(msgs, 1); if (!dma_wr_buf) return -ENOMEM; @@ -561,7 +561,7 @@ static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs, return -ENOMEM; } - dma_rd_buf = i2c_get_dma_safe_msg_buf((msgs + 1), 0); + dma_rd_buf = i2c_get_dma_safe_msg_buf((msgs + 1), 1); if (!dma_rd_buf) { dma_unmap_single(i2c->dev, wpaddr, msgs->len, DMA_TO_DEVICE); |