On Mon, 25 Sep 2006, Shakthi Kannan wrote:
I would like to know the meaning of "S3C2410_UDC_INDEX_ ## x" in the
following:
#define S3C2410_UDC_SETIX(x) \
__raw_writel(S3C2410_UDC_INDEX_ ## x, S3C2410_UDC_INDEX_REG);
The ## operator is the preprocessor token pasting operator. It is
basically a string concatenation operator.
So, if you say S3C2410_UDC_SETIX(5), then the first argument to
__raw_writel will be S3C2410_UDC_INDEX_5 .
/Ricard
--
Ricard Wolf Wanderlöf ricardw(at)axis.com
Axis Communications AB, Lund, Sweden www.axis.com
Phone +46 46 272 2016 Fax +46 46 13 61 30
