From: Jason Uhlenkott <[EMAIL PROTECTED]>
Applied to 2.6.24-rc6-mm1
By popular request, add a comment documenting the implicit type
promotion here.
Signed-off-by: Jason Uhlenkott <[EMAIL PROTECTED]>
Signed-off-by: Doug Thompson <[EMAIL PROTECTED]
---
i3000_edac.c | 7 +++++++
1 file changed, 7 insertions(+)
Index: linux/drivers/edac/i3000_edac.c
===================================================================
--- linux.orig/drivers/edac/i3000_edac.c 2008-01-14 15:16:11.137167678
-0800
+++ linux/drivers/edac/i3000_edac.c 2008-01-14 15:16:13.387855416 -0800
@@ -44,6 +44,13 @@
*/
#define I3000_DEAP_GRAIN (1 << 7)
+/*
+ * Helper functions to decode the DEAP/EDEAP hardware registers.
+ *
+ * The type promotion here is deliberate; we're deriving an
+ * unsigned long pfn and offset from hardware regs which are u8/u32.
+ */
+
static inline unsigned long deap_pfn(u8 edeap, u32 deap)
{
deap >>= PAGE_SHIFT;
--
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