The patch titled
introduce lower_32_bits() macro
has been added to the -mm tree. Its filename is
introduce-lower_32_bits-macro.patch
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------------------------------------------------------
Subject: introduce lower_32_bits() macro
From: Joerg Roedel <joerg.roedel@xxxxxxx>
The file kernel.h contains the upper_32_bits macro. This patch adds the
other part, the lower_32_bits macro. Its first use will be in the driver
for AMD IOMMU.
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/kernel.h | 6 ++++++
1 file changed, 6 insertions(+)
diff -puN include/linux/kernel.h~introduce-lower_32_bits-macro include/linux/kernel.h
--- a/include/linux/kernel.h~introduce-lower_32_bits-macro
+++ a/include/linux/kernel.h
@@ -75,6 +75,12 @@ extern const char linux_proc_banner[];
*/
#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
+/**
+ * lower_32_bits - return bits 0-31 of a number
+ * @n: the number we're accessing
+ */
+#define lower_32_bits(n) ((u32)(n))
+
#define KERN_EMERG "<0>" /* system is unusable */
#define KERN_ALERT "<1>" /* action must be taken immediately */
#define KERN_CRIT "<2>" /* critical conditions */
_
Patches currently in -mm which might be from joerg.roedel@xxxxxxx are
introduce-lower_32_bits-macro.patch
linux-next.patch
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