On 30 October 2012 16:58, Javier Martin <[email protected]> wrote: > HW chaining is currently broken in imx-dma. It can be easily reproduced doing > intensive accesses to a external MMC card and checking how the file system > is corrupted. > > Preventing the driver to use HW chaining solves these issues. > > > Signed-off-by: Javier Martin <[email protected]> > --- > drivers/dma/imx-dma.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c > index 5084975..03f3b64 100644 > --- a/drivers/dma/imx-dma.c > +++ b/drivers/dma/imx-dma.c > @@ -643,9 +643,8 @@ static int imxdma_control(struct dma_chan *chan, enum > dma_ctrl_cmd cmd, > break; > } > > - imxdmac->hw_chaining = 1; > - if (!imxdma_hw_chain(imxdmac)) > - return -EINVAL; > + imxdmac->hw_chaining = 0; > + > imxdmac->ccr_from_device = (mode | IMX_DMA_TYPE_FIFO) | > ((IMX_DMA_MEMSIZE_32 | IMX_DMA_TYPE_LINEAR) << 2) | > CCR_REN; > -- > 1.7.9.5 >
Hi Vinod, I see you missed this patch for 3.7. Could you please apply it as a fix for 3.8? Regards. -- Javier Martin Vista Silicon S.L. CDTUC - FASE C - Oficina S-345 Avda de los Castros s/n 39005- Santander. Cantabria. Spain +34 942 25 32 60 www.vista-silicon.com -- 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/
