From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Laurent Pinchart , Simon Horman Subject: [PATCH 3.12 52/77] ARM: shmobile: kzm9g: Fix coherent DMA mask Date: Mon, 13 Jan 2014 16:28:13 -0800 Message-Id: <20140114002753.983256416@linuxfoundation.org> In-Reply-To: <20140114002752.497010554@linuxfoundation.org> References: <20140114002752.497010554@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Laurent Pinchart commit 4f387323853c495ac589210832fad4503f75a0e7 upstream. Commit 4dcfa60071b3d23f0181f27d8519f12e37cefbb9 ("ARM: DMA-API: better handing of DMA masks for coherent allocations") added an additional check to the coherent DMA mask that results in an error when the mask is larger than what dma_addr_t can address. Set the LCDC coherent DMA mask to DMA_BIT_MASK(32) instead of ~0 to fix the problem. Signed-off-by: Laurent Pinchart Signed-off-by: Simon Horman Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-shmobile/board-kzm9g.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/arm/mach-shmobile/board-kzm9g.c +++ b/arch/arm/mach-shmobile/board-kzm9g.c @@ -334,7 +334,7 @@ static struct platform_device lcdc_devic .resource = lcdc_resources, .dev = { .platform_data = &lcdc_info, - .coherent_dma_mask = ~0, + .coherent_dma_mask = DMA_BIT_MASK(32), }, };