From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hiroshi Doyu Subject: [PATCH 1/1] iommu/tegra: smmu: Fix incorrect mask for regbase Date: Wed, 6 Feb 2013 19:38:15 +0200 Message-ID: <1360172295-21500-1-git-send-email-hdoyu@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: linux-tegra@vger.kernel.org This fixes kernel crash because of BUG() in register address validation. Signed-off-by: Hiroshi Doyu --- Verified with Tegra 114 based Dalmore board --- drivers/iommu/tegra-smmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 4d11069..05a8ddb 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -1192,7 +1192,7 @@ static int tegra_smmu_probe(struct platform_device *pdev) smmu->rege[i] = smmu->regs[i] + resource_size(res) - 1; } /* Same as "mc" 1st regiter block start address */ - smmu->regbase = (void __iomem *)((u32)smmu->regs[0] & ~PAGE_MASK); + smmu->regbase = (void __iomem *)((u32)smmu->regs[0] & PAGE_MASK); err = of_get_dma_window(dev->of_node, NULL, 0, NULL, &base, &size); if (err) -- 1.7.9.5