diff options
| author | Alexander Stein <alexander.stein@systec-electronic.com> | 2014-02-19 10:36:08 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-02-19 21:43:56 +0900 |
| commit | 7611c7a5613f20ec2fb536c1d868d15045730bc0 (patch) | |
| tree | a3905f23f2fa36fee4116c77c7b62e3466932ba6 | |
| parent | 38dbfb59d1175ef458d006556061adeaa8751b72 (diff) | |
| download | linux-7611c7a5613f20ec2fb536c1d868d15045730bc0.tar.gz linux-7611c7a5613f20ec2fb536c1d868d15045730bc0.tar.bz2 linux-7611c7a5613f20ec2fb536c1d868d15045730bc0.zip | |
spi/topcliff-pch: Fix DMA channel
bus_num might be asigned dynamically to e.g. 32766. In this case the
calculated DMA channel based on SPI bus number is bogus. Use SPI channel
number instead for calculation.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
| -rw-r--r-- | drivers/spi/spi-topcliff-pch.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-topcliff-pch.c b/drivers/spi/spi-topcliff-pch.c index 2e7f38c7a961..3383008ce04d 100644 --- a/drivers/spi/spi-topcliff-pch.c +++ b/drivers/spi/spi-topcliff-pch.c @@ -915,7 +915,7 @@ static void pch_spi_request_dma(struct pch_spi_data *data, int bpw) /* Set Tx DMA */ param = &dma->param_tx; param->dma_dev = &dma_dev->dev; - param->chan_id = data->master->bus_num * 2; /* Tx = 0, 2 */ + param->chan_id = data->ch * 2; /* Tx = 0, 2 */; param->tx_reg = data->io_base_addr + PCH_SPDWR; param->width = width; chan = dma_request_channel(mask, pch_spi_filter, param); @@ -930,7 +930,7 @@ static void pch_spi_request_dma(struct pch_spi_data *data, int bpw) /* Set Rx DMA */ param = &dma->param_rx; param->dma_dev = &dma_dev->dev; - param->chan_id = data->master->bus_num * 2 + 1; /* Rx = Tx + 1 */ + param->chan_id = data->ch * 2 + 1; /* Rx = Tx + 1 */; param->rx_reg = data->io_base_addr + PCH_SPDRR; param->width = width; chan = dma_request_channel(mask, pch_spi_filter, param); |