[fbtest,14/17] Make variables that are never negative unsigned

diff --git a/console.c b/console.c
index 0ed858e25f52c9d5..adcc78cd1d725f37 100644
--- a/console.c
+++ b/console.c
@@ -118,7 +118,7 @@  static void con_store_char(unsigned char c)
 {
     const unsigned char *src;
     unsigned char *dst;
-    int y;
+    unsigned int y;
 
     if (bitmap_width+con_font->width > bitmap_max_width)
 	con_flush();
diff --git a/fb.c b/fb.c
index ab351d15c82e09d9..4bc6d785e3e9070a 100644
--- a/fb.c
+++ b/fb.c
@@ -533,7 +533,7 @@  void fb_cleanup(void)
 
 static void fb_dump_cmap(void)
 {
-    int i;
+    unsigned int i;
 
     Debug("Colormap start = %d len = %d\n", fb_cmap.start, fb_cmap.len);
     for (i = 0; i < fb_cmap.len; i++)
diff --git a/pixmap.c b/pixmap.c
index 8cd21a62ff5235a8..a7c11909f2d5255d 100644
--- a/pixmap.c
+++ b/pixmap.c
@@ -71,7 +71,7 @@  static void image_bw_to_pixmap(const struct image *image, pixel_t *pixmap)
     pixel_t black, white;
     const unsigned char *src;
     pixel_t *dst;
-    int i, j, k;
+    unsigned int i, j, k;
 
     black = match_color(&clut_mono[0]);
     white = match_color(&clut_mono[1]);
@@ -101,7 +101,7 @@  static void image_lut256_to_pixmap(const struct image *image, pixel_t *pixmap)
     rgba_t color;
     const unsigned char *src;
     pixel_t *dst;
-    int i;
+    unsigned int i;
 
     color.a = 65535;
     if (image->type == IMAGE_GREY256) {
@@ -135,7 +135,7 @@  static void image_rgb888_to_pixmap(const struct image *image, pixel_t *pixmap)
     const unsigned char *src;
     pixel_t *dst;
     rgba_t color;
-    int i;
+    unsigned int i;
 
     src = image->data;
     dst = pixmap;
diff --git a/tests/test004.c b/tests/test004.c
index 9b1e79ef9077219d..308c1ee60899e5a9 100644
--- a/tests/test004.c
+++ b/tests/test004.c
@@ -27,7 +27,7 @@  static enum test_res test004_func(void)
 {
     const struct image *image;
     pixel_t *pixmap;
-    int x, y, width, height, i;
+    unsigned int x, y, width, height, i;
 
     image = &penguin;
     pixmap = create_pixmap(image);
diff --git a/tests/test006.c b/tests/test006.c
index 20ba90963ea10797..c3b6722fafbeaf3c 100644
--- a/tests/test006.c
+++ b/tests/test006.c
@@ -23,7 +23,7 @@ 
 
 static enum test_res test006_func(void)
 {
-    int i, j;
+    unsigned int i, j;
     pixel_t pixels[2];
     u32 x0, x1, y0, y1;
 
diff --git a/tests/test007.c b/tests/test007.c
index d6e7864c5b36d2bb..8fd1613c8b23cfb2 100644
--- a/tests/test007.c
+++ b/tests/test007.c
@@ -51,7 +51,7 @@  static void increase_level(int *component)
 
 static enum test_res test007_func(void)
 {
-    int i;
+    unsigned int i;
 
     fill_rect(0, 0, fb_var.xres, fb_var.yres, black_pixel);
     for (i = 0; i < red_len; i++)
diff --git a/tests/test009.c b/tests/test009.c
index 4f36950737c811df..a62724ff547c04ea 100644
--- a/tests/test009.c
+++ b/tests/test009.c
@@ -27,7 +27,7 @@  static enum test_res test009_func(void)
 {
     const struct image *image;
     pixel_t *pixmap;
-    int x, y, width, height;
+    unsigned int x, y, width, height;
 
     image = &penguin;
     pixmap = create_pixmap(image);
diff --git a/tests/test010.c b/tests/test010.c
index 6ed97e8e51bfb77e..5b26b773e873eeec 100644
--- a/tests/test010.c
+++ b/tests/test010.c
@@ -24,7 +24,7 @@ 
 
 static enum test_res test010_func(void)
 {
-    int i, j;
+    unsigned int i, j;
 
     con_init(&FONT);
     con_puts("Hello, world!\n");
diff --git a/visual.c b/visual.c
index e8782950df62178a..c5dbed3095d85e54 100644
--- a/visual.c
+++ b/visual.c
@@ -91,7 +91,7 @@  static u32 reverse32(u32 x)
 pixel_t *create_component_table(u32 size, u32 offset, int msb_right, u32 bpp)
 {
     pixel_t *table, pixel;
-    int i;
+    unsigned int i;
 
     if (!size)
 	return NULL;