Messages in this thread | | | Date | Tue, 12 Feb 2013 18:53:22 +0200 | Subject | Re: [PATCH] dw_dmac: apply default dma_mask if needed | From | Andy Shevchenko <> |
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On Tue, Feb 12, 2013 at 6:16 PM, Vinod Koul <vinod.koul@intel.com> wrote: > On Tue, Jan 29, 2013 at 05:06:24PM +0200, Andy Shevchenko wrote: >> In some cases we got the device without dma_mask configured. We have to apply >> the default value to avoid crashes during memory mapping. >> > what was this generated against, it fails to apply for me.
I've tested this against linux-next. The problem apparently in the patch which Greg submits earlier: 7331205a "dma: Convert to devm_ioremap_resource()". If you want I could rebase it against your next branch. I thought you'd seen that patch already.
> >> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> >> --- >> drivers/dma/dw_dmac.c | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c >> index e8d0679..a572a1e 100644 >> --- a/drivers/dma/dw_dmac.c >> +++ b/drivers/dma/dw_dmac.c >> @@ -1673,6 +1673,12 @@ static int dw_probe(struct platform_device *pdev) >> if (IS_ERR(regs)) >> return PTR_ERR(regs); >> >> + /* Apply default dma_mask if needed */ >> + if (!pdev->dev.dma_mask) { >> + pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; >> + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); >> + } >> + >> dw_params = dma_read_byaddr(regs, DW_PARAMS); >> autocfg = dw_params >> DW_PARAMS_EN & 0x1; >> >> -- >> 1.7.10.4 >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- With Best Regards, Andy Shevchenko
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