From: Qiang Liu <[email protected]> These drivers set the DMA_INTERRUPT capability bit when requesting a DMA controller channel. This was historical, and is no longer needed.
Recent changes to the drivers/dma/fsldma.c driver have removed support for this flag. This makes the carma drivers unable to find a DMA channel with the required capabilities. Cc: Arnd Bergmann <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Signed-off-by: Ira W. Snyder <[email protected]> --- Based on git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git against branch char-misc-next. drivers/misc/carma/carma-fpga-program.c | 1 - drivers/misc/carma/carma-fpga.c | 2 +- 2 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/misc/carma/carma-fpga-program.c b/drivers/misc/carma/carma-fpga-program.c index a2d25e4..eaddfe9 100644 --- a/drivers/misc/carma/carma-fpga-program.c +++ b/drivers/misc/carma/carma-fpga-program.c @@ -978,7 +978,6 @@ static int fpga_of_probe(struct platform_device *op) dev_set_drvdata(priv->dev, priv); dma_cap_zero(mask); dma_cap_set(DMA_MEMCPY, mask); - dma_cap_set(DMA_INTERRUPT, mask); dma_cap_set(DMA_SLAVE, mask); dma_cap_set(DMA_SG, mask); diff --git a/drivers/misc/carma/carma-fpga.c b/drivers/misc/carma/carma-fpga.c index 8c279da..0c43297 100644 --- a/drivers/misc/carma/carma-fpga.c +++ b/drivers/misc/carma/carma-fpga.c @@ -666,7 +666,7 @@ static int data_submit_dma(struct fpga_device *priv, struct data_buf *buf) src = SYS_FPGA_BLOCK; tx = chan->device->device_prep_dma_memcpy(chan, dst, src, REG_BLOCK_SIZE, - DMA_PREP_INTERRUPT); + 0); if (!tx) { dev_err(priv->dev, "unable to prep SYS-FPGA DMA\n"); return -ENOMEM; -- 1.7.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
