Merge tag 'lsk-v4.4-16.07-android'

[firefly-linux-kernel-4.4.55.git] / arch / arm / mach-mvebu / coherency.c

diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c
index 55348ee5a35228cf5e8cbb8f55b0b16b4d56c805..a27be620440170bf0e5ae627884ec73dc18ef57f 100644 (file)
--- a/arch/arm/mach-mvebu/coherency.c
+++ b/arch/arm/mach-mvebu/coherency.c
@@ -98,7 +98,7 @@ static int mvebu_hwcc_notifier(struct notifier_block *nb,
 
        if (event != BUS_NOTIFY_ADD_DEVICE)
                return NOTIFY_DONE;
-       set_dma_ops(dev, &arm_coherent_dma_ops);
+       arch_set_dma_ops(dev, &arm_coherent_dma_ops);
 
        return NOTIFY_OK;
 }
@@ -162,22 +162,16 @@ exit:
 }
 
 /*
- * This ioremap hook is used on Armada 375/38x to ensure that PCIe
- * memory areas are mapped as MT_UNCACHED instead of MT_DEVICE. This
- * is needed as a workaround for a deadlock issue between the PCIe
- * interface and the cache controller.
+ * This ioremap hook is used on Armada 375/38x to ensure that all MMIO
+ * areas are mapped as MT_UNCACHED instead of MT_DEVICE. This is
+ * needed for the HW I/O coherency mechanism to work properly without
+ * deadlock.
  */
 static void __iomem *
-armada_pcie_wa_ioremap_caller(phys_addr_t phys_addr, size_t size,
-                             unsigned int mtype, void *caller)
+armada_wa_ioremap_caller(phys_addr_t phys_addr, size_t size,
+                        unsigned int mtype, void *caller)
 {
-       struct resource pcie_mem;
-
-       mvebu_mbus_get_pcie_mem_aperture(&pcie_mem);
-
-       if (pcie_mem.start <= phys_addr && (phys_addr + size) <= pcie_mem.end)
-               mtype = MT_UNCACHED;
-
+       mtype = MT_UNCACHED;
        return __arm_ioremap_caller(phys_addr, size, mtype, caller);
 }
 
@@ -186,7 +180,7 @@ static void __init armada_375_380_coherency_init(struct device_node *np)
        struct device_node *cache_dn;
 
        coherency_cpu_base = of_iomap(np, 0);
-       arch_ioremap_caller = armada_pcie_wa_ioremap_caller;
+       arch_ioremap_caller = armada_wa_ioremap_caller;
 
        /*
         * We should switch the PL310 to I/O coherency mode only if