diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.14/089-PCI-iproc-Fix-NULL-pointer-dereference-for-BCMA.patch | 80 | ||||
| -rw-r--r-- | target/linux/bcm53xx/patches-4.14/982-PCI-iproc-Disable-DMA-mapping-support.patch | 29 |
2 files changed, 80 insertions, 29 deletions
diff --git a/target/linux/bcm53xx/patches-4.14/089-PCI-iproc-Fix-NULL-pointer-dereference-for-BCMA.patch b/target/linux/bcm53xx/patches-4.14/089-PCI-iproc-Fix-NULL-pointer-dereference-for-BCMA.patch new file mode 100644 index 0000000000..2cdefc26ff --- /dev/null +++ b/target/linux/bcm53xx/patches-4.14/089-PCI-iproc-Fix-NULL-pointer-dereference-for-BCMA.patch @@ -0,0 +1,80 @@ +From 3b65ca50d24ce33cb92d88840e289135c92b40ed Mon Sep 17 00:00:00 2001 +From: Ray Jui <ray.jui@broadcom.com> +Date: Thu, 11 Jan 2018 12:36:16 -0800 +Subject: [PATCH] PCI: iproc: Fix NULL pointer dereference for BCMA +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +With the inbound DMA mapping supported added, the iProc PCIe driver +parses DT property "dma-ranges" through call to +"of_pci_dma_range_parser_init()". In the case of BCMA, this results in a +NULL pointer deference due to a missing of_node. + +Fix this by adding a guard in pcie-iproc-platform.c to only enable the +inbound DMA mapping logic when DT property "dma-ranges" is present. + +Fixes: dd9d4e7498de3 ("PCI: iproc: Add inbound DMA mapping support") +Reported-by: Rafał Miłecki <rafal@milecki.pl> +Signed-off-by: Ray Jui <ray.jui@broadcom.com> +[lorenzo.pieralisi@arm.com: updated commit log] +Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> +Tested-by: Rafał Miłecki <rafal@milecki.pl> +cc: <stable@vger.kernel.org> # 4.10+ +--- + drivers/pci/host/pcie-iproc-platform.c | 7 +++++++ + drivers/pci/host/pcie-iproc.c | 8 +++++--- + drivers/pci/host/pcie-iproc.h | 2 ++ + 3 files changed, 14 insertions(+), 3 deletions(-) + +--- a/drivers/pci/host/pcie-iproc-platform.c ++++ b/drivers/pci/host/pcie-iproc-platform.c +@@ -92,6 +92,13 @@ static int iproc_pcie_pltfm_probe(struct + pcie->need_ob_cfg = true; + } + ++ /* ++ * DT nodes are not used by all platforms that use the iProc PCIe ++ * core driver. For platforms that require explict inbound mapping ++ * configuration, "dma-ranges" would have been present in DT ++ */ ++ pcie->need_ib_cfg = of_property_read_bool(np, "dma-ranges"); ++ + /* PHY use is optional */ + pcie->phy = devm_phy_get(dev, "pcie-phy"); + if (IS_ERR(pcie->phy)) { +--- a/drivers/pci/host/pcie-iproc.c ++++ b/drivers/pci/host/pcie-iproc.c +@@ -1396,9 +1396,11 @@ int iproc_pcie_setup(struct iproc_pcie * + } + } + +- ret = iproc_pcie_map_dma_ranges(pcie); +- if (ret && ret != -ENOENT) +- goto err_power_off_phy; ++ if (pcie->need_ib_cfg) { ++ ret = iproc_pcie_map_dma_ranges(pcie); ++ if (ret && ret != -ENOENT) ++ goto err_power_off_phy; ++ } + + #ifdef CONFIG_ARM + pcie->sysdata.private_data = pcie; +--- a/drivers/pci/host/pcie-iproc.h ++++ b/drivers/pci/host/pcie-iproc.h +@@ -74,6 +74,7 @@ struct iproc_msi; + * @ob: outbound mapping related parameters + * @ob_map: outbound mapping related parameters specific to the controller + * ++ * @need_ib_cfg: indicates SW needs to configure the inbound mapping window + * @ib: inbound mapping related parameters + * @ib_map: outbound mapping region related parameters + * +@@ -101,6 +102,7 @@ struct iproc_pcie { + struct iproc_pcie_ob ob; + const struct iproc_pcie_ob_map *ob_map; + ++ bool need_ib_cfg; + struct iproc_pcie_ib ib; + const struct iproc_pcie_ib_map *ib_map; + diff --git a/target/linux/bcm53xx/patches-4.14/982-PCI-iproc-Disable-DMA-mapping-support.patch b/target/linux/bcm53xx/patches-4.14/982-PCI-iproc-Disable-DMA-mapping-support.patch deleted file mode 100644 index 8196afb015..0000000000 --- a/target/linux/bcm53xx/patches-4.14/982-PCI-iproc-Disable-DMA-mapping-support.patch +++ /dev/null @@ -1,29 +0,0 @@ -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> -Date: Fri, 29 Dec 2017 22:39:45 +0100 -Subject: [PATCH] PCI: iproc: Disable DMA mapping support -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This has been added in commit dd9d4e7498de3 ("PCI: iproc: Add inbound -DMA mapping support") which causes a crash for bcma case. Function -pci_dma_range_parser_init calls of_n_addr_cells with a NULL argument -which causes a NULL pointer dereference. - -Signed-off-by: Rafał Miłecki <rafal@milecki.pl> ---- - ---- a/drivers/pci/host/pcie-iproc.c -+++ b/drivers/pci/host/pcie-iproc.c -@@ -1396,9 +1396,11 @@ int iproc_pcie_setup(struct iproc_pcie * - } - } - -+if (0) { - ret = iproc_pcie_map_dma_ranges(pcie); - if (ret && ret != -ENOENT) - goto err_power_off_phy; -+} - - #ifdef CONFIG_ARM - pcie->sysdata.private_data = pcie; |