Re: Regression: dmaengine: imx28 with emmc

[Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>]

On Mon, Oct 14, 2019 at 04:13:44PM +0200, Sascha Hauer wrote:
> Hi Bruno,
> 
> On Tue, Oct 08, 2019 at 10:03:16AM +0200, Bruno Thomsen wrote:
> > Hi
> > 
> > I am getting a kernel oops[1] during boot on imx28 with emmc flash right
> > around rootfs mounting. Using git bisect I found the cause to be the
> > following commit.
> > 
> > Regression: ceeeb99cd821 ("dmaengine: mxs: rename custom flag")
> > 
> > Reverting the 2 changes in drivers/dma/mxs-dma.c fixes the oops,
> > but I am not sure that is the right solution as I don't have the full
> > mxs-dma + mtd/mmc overview.
> > 
> > I did see that the patch isn't a simple rename but also a bit define
> > change.
> > From: DMA_CTRL_ACK = (1 << 1) = BIT(1)
> > To: MXS_DMA_CTRL_WAIT4END = BIT(31)
> > 
> 
> Damn, I wasn't aware the DMA driver has other users than the GPMI Nand.
> Please try the attached patch, it should fix it for MMC/SD. It seems
> however, that I2C and AUART and SPI are also affected. Are you able to
> test any of these?

I just sent out the patch again for inclusion with the collected
tested-by tags.

Sascha

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