On 23/08/13 20:53, Joel Fernandes wrote: > HWMOD removal for MMC and Crypto is breaking edma_start as the events are > being manually triggered due to unused channel list not being clear. Atleast > breakage has been seen on these peripherals, but it is expected Audio (McASP) > maybe breaking too. > > This patch fixes the issue, by reading the "dmas" property from the DT node if > it exists and clearing the bits in the unused channel list so that these > channels > are not manually triggered. > > v2 changes: > Reduced indendation by returning from if block. > > Reviewed-by: Sekhar Nori <nsek...@ti.com> > Reported-by: Balaji T K <balaj...@ti.com> > Cc: Pantel Antoniou <pa...@antoniou-consulting.com> > Signed-off-by: Joel Fernandes <jo...@ti.com> > --- > Note: > Patch should go in for -rc cycle as it fixes existing crypto drivers. > > arch/arm/common/edma.c | 22 +++++++++++++++++++--- > 1 file changed, 19 insertions(+), 3 deletions(-) > > diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c > index 39ad030..3867e7e 100644 > --- a/arch/arm/common/edma.c > +++ b/arch/arm/common/edma.c > @@ -560,14 +560,30 @@ static int reserve_contiguous_slots(int ctlr, unsigned > int id, > static int prepare_unused_channel_list(struct device *dev, void *data) > { > struct platform_device *pdev = to_platform_device(dev); > - int i, ctlr; > + int i = 0, ctlr; > + u32 dma_chan; > + const __be32 *dma_chan_p; > + struct property *prop; > + > + if (dev->of_node) { > + of_property_for_each_u32(dev->of_node, "dmas", prop, > + dma_chan_p, dma_chan) { > + if (i++ & 1) { > + ctlr = EDMA_CTLR(dma_chan); > + clear_bit(EDMA_CHAN_SLOT(dma_chan), > + edma_cc[ctlr]->edma_unused); > + } > + } > + return;
This should return something here, otherwise we get:- arch/arm/common/edma.c: In function 'prepare_unused_channel_list': arch/arm/common/edma.c:577:3: warning: 'return' with no value, in function returning non-void [-Wreturn-type] Mark J. > + } > > - for (i = 0; i < pdev->num_resources; i++) { > + /* For non-OF case */ > + for (; i < pdev->num_resources; i++) { > if ((pdev->resource[i].flags & IORESOURCE_DMA) && > (int)pdev->resource[i].start >= 0) { > ctlr = EDMA_CTLR(pdev->resource[i].start); > clear_bit(EDMA_CHAN_SLOT(pdev->resource[i].start), > - edma_cc[ctlr]->edma_unused); > + edma_cc[ctlr]->edma_unused); > } > } -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html