diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2014-11-19 15:43:22 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-11-19 17:17:16 +0300 |
| commit | 8cfcae9f0595bf0d145a67cfaa1051804a301d7c (patch) | |
| tree | dcfbd3389d3a03ee991cbdd8d95b6e02374deb65 /drivers/i2c | |
| parent | f5084933673e57d38492198f04b0e81b6d00dfb2 (diff) | |
| download | linux-8cfcae9f0595bf0d145a67cfaa1051804a301d7c.tar.xz | |
i2c: sh_mobile: use proper device for mapping DMA memory
It should be the DMA device, not the platform device.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-sh_mobile.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c index 92c7f7b56bdf..c7f36c1ce688 100644 --- a/drivers/i2c/busses/i2c-sh_mobile.c +++ b/drivers/i2c/busses/i2c-sh_mobile.c @@ -507,6 +507,17 @@ static irqreturn_t sh_mobile_i2c_isr(int irq, void *dev_id) return IRQ_HANDLED; } +static void sh_mobile_i2c_dma_unmap(struct sh_mobile_i2c_data *pd) +{ + struct dma_chan *chan = pd->dma_direction == DMA_FROM_DEVICE + ? pd->dma_rx : pd->dma_tx; + + dma_unmap_single(chan->device->dev, sg_dma_address(&pd->sg), + pd->msg->len, pd->dma_direction); + + pd->dma_direction = DMA_NONE; +} + static void sh_mobile_i2c_cleanup_dma(struct sh_mobile_i2c_data *pd) { if (pd->dma_direction == DMA_NONE) @@ -516,20 +527,14 @@ static void sh_mobile_i2c_cleanup_dma(struct sh_mobile_i2c_data *pd) else if (pd->dma_direction == DMA_TO_DEVICE) dmaengine_terminate_all(pd->dma_tx); - dma_unmap_single(pd->dev, sg_dma_address(&pd->sg), - pd->msg->len, pd->dma_direction); - - pd->dma_direction = DMA_NONE; + sh_mobile_i2c_dma_unmap(pd); } static void sh_mobile_i2c_dma_callback(void *data) { struct sh_mobile_i2c_data *pd = data; - dma_unmap_single(pd->dev, sg_dma_address(&pd->sg), - pd->msg->len, pd->dma_direction); - - pd->dma_direction = DMA_NONE; + sh_mobile_i2c_dma_unmap(pd); pd->pos = pd->msg->len; iic_set_clr(pd, ICIC, 0, ICIC_TDMAE | ICIC_RDMAE); @@ -547,7 +552,7 @@ static void sh_mobile_i2c_xfer_dma(struct sh_mobile_i2c_data *pd) if (!chan) return; - dma_addr = dma_map_single(pd->dev, pd->msg->buf, pd->msg->len, dir); + dma_addr = dma_map_single(chan->device->dev, pd->msg->buf, pd->msg->len, dir); if (dma_mapping_error(pd->dev, dma_addr)) { dev_dbg(pd->dev, "dma map failed, using PIO\n"); return; |