3.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Seungwon Jeon <[email protected]> commit e6015c1f8a9032c2aecb78d23edf49582563bd47 upstream. This change places MDMA1 in disabled node for Exynos5420. If MDMA1 region is configured with secure mode, it makes the boot failure with the following on smdk5420 board. ("Unhandled fault: imprecise external abort (0x1406) at 0x00000000") Thus, arndale-octa board don't need to do the same thing anymore. Signed-off-by: Seungwon Jeon <[email protected]> Tested-by: Javi Merino <[email protected]> Signed-off-by: Kukjin Kim <[email protected]> Signed-off-by: Tushar Behera <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- Tested on top of v3.14.10. Fixes issue reported at [1]. [1] http://armcloud.us/kernel-ci/stable/v3.14.10/arm-exynos_defconfig/boot-exynos5420-arndale-octa.html arch/arm/boot/dts/exynos5420.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -323,6 +323,13 @@ #dma-cells = <1>; #dma-channels = <8>; #dma-requests = <1>; + /* + * MDMA1 can support both secure and non-secure + * AXI transactions. When this is enabled in the kernel + * for boards that run in secure mode, we are getting + * imprecise external aborts causing the kernel to oops. + */ + status = "disabled"; }; }; -- 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/
