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authorRolf Eike Beer <eike-kernel@sf-tec.de>2007-07-19 17:48:44 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-08-22 14:48:40 -0700
commit5ca24814247fa4c039b893bf80fc05d0e5d41b00 (patch)
treefb1d19e094e5337e4a33d97ad487ce36c631d104 /include/asm-i386/io.h
parent4e68fc97b17470365a65bc569523dd9012730e44 (diff)
PCI: Document pci_iomap()
This useful interface is hardly mentioned anywhere in the in-tree documentation. Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Cc: Tejun Heo <htejun@gmail.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/asm-i386/io.h')
-rw-r--r--include/asm-i386/io.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-i386/io.h b/include/asm-i386/io.h
index 7b65b5b0003..e8e0bd64112 100644
--- a/include/asm-i386/io.h
+++ b/include/asm-i386/io.h
@@ -112,6 +112,9 @@ extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsign
* writew/writel functions and the other mmio helpers. The returned
* address is not guaranteed to be usable directly as a virtual
* address.
+ *
+ * If the area you are trying to map is a PCI BAR you should have a
+ * look at pci_iomap().
*/
static inline void __iomem * ioremap(unsigned long offset, unsigned long size)