include/bitfield.h: Assure new bitfield value doesn't touch unwanted bits
The new bitfield value must not be higher than its mask.
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/include/bitfield.h b/include/bitfield.h
index ec4815c..b884c74 100644
--- a/include/bitfield.h
+++ b/include/bitfield.h
@@ -54,5 +54,5 @@
{
uint mask = bitfield_mask(shift, width);
- return (reg_val & ~mask) | (bitfield_val << shift);
+ return (reg_val & ~mask) | ((bitfield_val << shift) & mask);
}