NFSv4.1 reclaim complete must wait for completion

[mv-sheeva.git] / drivers / acpi / osl.c

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index e2dd6de5d50c8dbd01246416a59f26dcda51c954..c90c76aa7f8b79152ab4f449dbddbf9ba4983b93 100644 (file)
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -38,6 +38,7 @@
 #include <linux/workqueue.h>
 #include <linux/nmi.h>
 #include <linux/acpi.h>
+#include <linux/acpi_io.h>
 #include <linux/efi.h>
 #include <linux/ioport.h>
 #include <linux/list.h>
@@ -302,9 +303,10 @@ void __iomem *__init_refok
 acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
        struct acpi_ioremap *map, *tmp_map;
-       unsigned long flags, pg_sz;
+       unsigned long flags;
        void __iomem *virt;
-       phys_addr_t pg_off;
+       acpi_physical_address pg_off;
+       acpi_size pg_sz;
 
        if (phys > ULONG_MAX) {
                printk(KERN_ERR PREFIX "Cannot map memory that high\n");
@@ -320,7 +322,7 @@ acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 
        pg_off = round_down(phys, PAGE_SIZE);
        pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off;
-       virt = ioremap_cache(pg_off, pg_sz);
+       virt = acpi_os_ioremap(pg_off, pg_sz);
        if (!virt) {
                kfree(map);
                return NULL;
@@ -634,17 +636,21 @@ EXPORT_SYMBOL(acpi_os_write_port);
 acpi_status
 acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width)
 {
-       u32 dummy;
        void __iomem *virt_addr;
-       int size = width / 8, unmap = 0;
+       unsigned int size = width / 8;
+       bool unmap = false;
+       u32 dummy;
 
        rcu_read_lock();
        virt_addr = acpi_map_vaddr_lookup(phys_addr, size);
-       rcu_read_unlock();
        if (!virt_addr) {
-               virt_addr = ioremap_cache(phys_addr, size);
-               unmap = 1;
+               rcu_read_unlock();
+               virt_addr = acpi_os_ioremap(phys_addr, size);
+               if (!virt_addr)
+                       return AE_BAD_ADDRESS;
+               unmap = true;
        }
+
        if (!value)
                value = &dummy;
 
@@ -664,6 +670,8 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width)
 
        if (unmap)
                iounmap(virt_addr);
+       else
+               rcu_read_unlock();
 
        return AE_OK;
 }
@@ -672,14 +680,17 @@ acpi_status
 acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
 {
        void __iomem *virt_addr;
-       int size = width / 8, unmap = 0;
+       unsigned int size = width / 8;
+       bool unmap = false;
 
        rcu_read_lock();
        virt_addr = acpi_map_vaddr_lookup(phys_addr, size);
-       rcu_read_unlock();
        if (!virt_addr) {
-               virt_addr = ioremap_cache(phys_addr, size);
-               unmap = 1;
+               rcu_read_unlock();
+               virt_addr = acpi_os_ioremap(phys_addr, size);
+               if (!virt_addr)
+                       return AE_BAD_ADDRESS;
+               unmap = true;
        }
 
        switch (width) {
@@ -698,6 +709,8 @@ acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width)
 
        if (unmap)
                iounmap(virt_addr);
+       else
+               rcu_read_unlock();
 
        return AE_OK;
 }