From patchwork Thu May 31 09:52:27 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [4/6] UBUNTU: SAUCE: force DMA buffers to non-bufferable on highbank Date: Wed, 30 May 2012 23:52:27 -0000 From: Ike Panhc X-Patchwork-Id: 162126 Message-Id: <1338457947-27718-1-git-send-email-ike.pan@canonical.com> To: kernel-team@lists.ubuntu.com From: Rob Herring BugLink: http://bugs.launchpad.net/bugs/1000831 The xgmac driver has problems with bufferable DMA descriptors. For now, change the memory type to get things working reliably. Signed-off-by: Rob Herring Signed-off-by: Ike Panhc --- arch/arm/mm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 7c8a7d8..4248422 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -895,7 +895,7 @@ config ARM_L1_CACHE_SHIFT config ARM_DMA_MEM_BUFFERABLE bool "Use non-cacheable memory for DMA" if (CPU_V6 || CPU_V6K) && !CPU_V7 depends on !(MACH_REALVIEW_PB1176 || REALVIEW_EB_ARM11MP || \ - MACH_REALVIEW_PB11MP) + MACH_REALVIEW_PB11MP || ARCH_HIGHBANK) default y if CPU_V6 || CPU_V6K || CPU_V7 help Historically, the kernel has used strongly ordered mappings to