uio: support memory sizes larger than 32 bits

This is a completion to 27a90700a4275c5178b883b65927affdafa5185c
The size field is also increased to allow values larger than 32 bits
on platforms that have more than 32 bit physical addresses.

Signed-off-by: Cristian Stoica <cristian.stoica@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index bbe9c1f..1fdc246 100644 (file)
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -540,7 +540,7 @@ appears in sysfs.
 </para></listitem>
 
 <listitem><para>
-<varname>unsigned long size</varname>: Fill in the size of the
+<varname>resource_size_t size</varname>: Fill in the size of the
 memory block that <varname>addr</varname> points to. If <varname>size</varname>
 is zero, the mapping is considered unused. Note that you
 <emphasis>must</emphasis> initialize <varname>size</varname> with zero for

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 60fa627..6276f13 100644 (file)
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -56,12 +56,12 @@ static ssize_t map_name_show(struct uio_mem *mem, char *buf)
 
 static ssize_t map_addr_show(struct uio_mem *mem, char *buf)
 {
-       return sprintf(buf, "0x%llx\n", (unsigned long long)mem->addr);
+       return sprintf(buf, "%pa\n", &mem->addr);
 }
 
 static ssize_t map_size_show(struct uio_mem *mem, char *buf)
 {
-       return sprintf(buf, "0x%lx\n", mem->size);
+       return sprintf(buf, "%pa\n", &mem->size);
 }
 
 static ssize_t map_offset_show(struct uio_mem *mem, char *buf)

diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h
index baa8171..32c0e83 100644 (file)
--- a/include/linux/uio_driver.h
+++ b/include/linux/uio_driver.h
@@ -35,7 +35,7 @@ struct uio_map;
 struct uio_mem {
        const char              *name;
        phys_addr_t             addr;
-       unsigned long           size;
+       resource_size_t         size;
        int                     memtype;
        void __iomem            *internal_addr;
        struct uio_map          *map;