On 09/30/2015 09:44 AM, Geert Uytterhoeven wrote:

quoted

quoted

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <redacted>
---
   arch/arm/boot/dts/r8a7791.dtsi | 22 ++++++++++++++++++++++
   1 file changed, 22 insertions(+)

quoted

    When the USB-DMAC driver is enabled, this causes kernel oops on at least
the R8A7791 Henninger/Porter boards (haven't checked the others yet) with
renesas-devel-20150928-v4.3-rc3 and even earlier tag. The oops can only be
seen with the earlyprintk=serial kernel parameter, otherwise the kernel just
hangs with a blank console.

My current kernel on r8a7791/koelsch has CONFIG_RENESAS_USB_DMAC=y and boots
fine.

renesas-devel-20150928-v4.3-rc3 with shmobile_defconfig +
CONFIG_RENESAS_USB_DMAC=y also boots fine.

    Indeed, I was able to boot it all the way on Henninger.

Do I need to enable/disable config options to trigger this?

    It appears so. I just don't know what -- the diff between my .config and 
shmobile_defconfig is 150+ hunks. :-(

Gr{oetje,eeting}s,

                         Geert

MBR, Sergei