target/linux/bcm53xx/patches-4.14/982-PCI-iproc-Disable-DMA-mapping-support.patch

   1 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   2 Date: Fri, 29 Dec 2017 22:39:45 +0100
   3 Subject: [PATCH] PCI: iproc: Disable DMA mapping support
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   7
   8 This has been added in commit dd9d4e7498de3 ("PCI: iproc: Add inbound
   9 DMA mapping support") which causes a crash for bcma case. Function
  10 pci_dma_range_parser_init calls of_n_addr_cells with a NULL argument
  11 which causes a NULL pointer dereference.
  12
  13 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  14 ---
  15
  16 --- a/drivers/pci/host/pcie-iproc.c
  17 +++ b/drivers/pci/host/pcie-iproc.c
  18 @@ -1396,9 +1396,11 @@ int iproc_pcie_setup(struct iproc_pcie *
  19                 }
  20         }
  21
  22 +if (0) {
  23         ret = iproc_pcie_map_dma_ranges(pcie);
  24         if (ret && ret != -ENOENT)
  25                 goto err_power_off_phy;
  26 +}
  27
  28  #ifdef CONFIG_ARM
  29         pcie->sysdata.private_data = pcie;