Constify two char pointers and a struct in Documentation/spi/spidev_test.c.

CC: David Brownell <dbrownell@users.sourceforge.net>
CC: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>

---
 Documentation/spi/spidev_test.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Index: linux-2.6.23-rc9/Documentation/spi/spidev_test.c
===================================================================
--- linux-2.6.23-rc9.orig/Documentation/spi/spidev_test.c
+++ linux-2.6.23-rc9/Documentation/spi/spidev_test.c
@@ -29,7 +29,7 @@ static void pabort(const char *s)
 	abort();
 }
 
-static char *device = "/dev/spidev1.1";
+static const char *device = "/dev/spidev1.1";
 static uint8_t mode;
 static uint8_t bits = 8;
 static uint32_t speed = 500000;
@@ -69,7 +69,7 @@ static void transfer(int fd)
 	puts("");
 }
 
-void print_usage(char *prog)
+void print_usage(const char *prog)
 {
 	printf("Usage: %s [-DsbdlHOLC3]\n", prog);
 	puts("  -D --device   device to use (default /dev/spidev1.1)\n"
@@ -88,7 +88,7 @@ void print_usage(char *prog)
 void parse_opts(int argc, char *argv[])
 {
 	while (1) {
-		static struct option lopts[] = {
+		static const struct option lopts[] = {
 			{ "device",  1, 0, 'D' },
 			{ "speed",   1, 0, 's' },
 			{ "delay",   1, 0, 'd' },
-
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