From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= Subject: [PATCH v6 2/6] iommu: io-pgtable: fix sanity check for non 48-bit mali iommu Date: Tue, 21 May 2019 18:10:58 +0200 Message-ID: <20190521161102.29620-3-peron.clem@gmail.com> References: <20190521161102.29620-1-peron.clem@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190521161102.29620-1-peron.clem@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: David Airlie , Daniel Vetter , Rob Herring , Mark Rutland , Maxime Ripard , Chen-Yu Tsai , Tomeu Vizoso , Will Deacon , Robin Murphy , Joerg Roedel , Neil Armstrong , Steven Price Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= List-Id: devicetree@vger.kernel.org Allwinner H6 SoC has a Mali T720MP2 with a 33-bit iommu which trig the sanity check during the alloc of the pgtable. Change the sanity check to allow non 48-bit configuration. Suggested-by: Robin Murphy Signed-off-by: Clément Péron --- drivers/iommu/io-pgtable-arm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index 4e21efbc4459..74f2ce802e6f 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -1016,7 +1016,7 @@ arm_mali_lpae_alloc_pgtable(struct io_pgtable_cfg *cfg, void *cookie) { struct io_pgtable *iop; - if (cfg->ias != 48 || cfg->oas > 40) + if (cfg->ias > 48 || cfg->oas > 40) return NULL; cfg->pgsize_bitmap &= (SZ_4K | SZ_2M | SZ_1G); -- 2.17.1