[PATCH] drivers/video: Fix comparisons between negative and unsigned

[Bill Nottingham <notting@redhat.com>]

Recent gcc versions emit warnings when unsigned variables are compared < 0 or >= 0.

Signed-off-by: Bill Nottingham <notting@redhat.com>

---
 aty/aty128fb.c       |    3 ---
 aty/radeon_base.c    |    5 -----
 cirrusfb.c           |    5 -----
 fbmem.c              |    8 ++++----
 intelfb/intelfbdrv.c |    5 -----
 riva/fbdev.c         |    5 -----
 vga16fb.c            |    2 +-
 7 files changed, 5 insertions(+), 28 deletions(-)

diff -ru linux-2.6.21-old/drivers/video/aty/aty128fb.c linux-2.6.21/drivers/video/aty/aty128fb.c
--- linux-2.6.21-old/drivers/video/aty/aty128fb.c	2007-05-30 02:53:00.000000000 -0400
+++ linux-2.6.21/drivers/video/aty/aty128fb.c	2007-05-30 02:28:35.000000000 -0400
@@ -1350,9 +1350,6 @@
 		}
 	}
 
-	if (pll->post_divider < 0)
-		return -EINVAL;
-
 	/* calculate feedback divider */
 	n = c.ref_divider * output_freq;
 	d = c.ref_clk;
diff -ru linux-2.6.21-old/drivers/video/aty/radeon_base.c linux-2.6.21/drivers/video/aty/radeon_base.c
--- linux-2.6.21-old/drivers/video/aty/radeon_base.c	2007-05-30 02:53:00.000000000 -0400
+++ linux-2.6.21/drivers/video/aty/radeon_base.c	2007-05-30 02:28:13.000000000 -0400
@@ -813,11 +813,6 @@
 	if (v.xres_virtual < v.xres)
 		v.xres = v.xres_virtual;
 
-	if (v.xoffset < 0)
-                v.xoffset = 0;
-        if (v.yoffset < 0)
-                v.yoffset = 0;
-         
         if (v.xoffset > v.xres_virtual - v.xres)
                 v.xoffset = v.xres_virtual - v.xres - 1;
                         
diff -ru linux-2.6.21-old/drivers/video/cirrusfb.c linux-2.6.21/drivers/video/cirrusfb.c
--- linux-2.6.21-old/drivers/video/cirrusfb.c	2007-05-30 02:53:00.000000000 -0400
+++ linux-2.6.21/drivers/video/cirrusfb.c	2007-05-30 02:29:21.000000000 -0400
@@ -729,11 +729,6 @@
 	if (var->yres_virtual < var->yres)
 		var->yres_virtual = var->yres;
 
-	if (var->xoffset < 0)
-		var->xoffset = 0;
-	if (var->yoffset < 0)
-		var->yoffset = 0;
-
 	/* truncate xoffset and yoffset to maximum if too high */
 	if (var->xoffset > var->xres_virtual - var->xres)
 		var->xoffset = var->xres_virtual - var->xres - 1;
diff -ru linux-2.6.21-old/drivers/video/fbmem.c linux-2.6.21/drivers/video/fbmem.c
--- linux-2.6.21-old/drivers/video/fbmem.c	2007-05-30 02:53:00.000000000 -0400
+++ linux-2.6.21/drivers/video/fbmem.c	2007-05-30 02:27:25.000000000 -0400
@@ -392,7 +392,7 @@
 			image->dx += image->width + 8;
 		}
 	} else if (rotate == FB_ROTATE_UD) {
-		for (x = 0; x < num && image->dx >= 0; x++) {
+		for (x = 0; x < num; x++) {
 			info->fbops->fb_imageblit(info, image);
 			image->dx -= image->width + 8;
 		}
@@ -404,7 +404,7 @@
 			image->dy += image->height + 8;
 		}
 	} else if (rotate == FB_ROTATE_CCW) {
-		for (x = 0; x < num && image->dy >= 0; x++) {
+		for (x = 0; x < num; x++) {
 			info->fbops->fb_imageblit(info, image);
 			image->dy -= image->height + 8;
 		}
@@ -973,9 +973,9 @@
 	case FBIOPUT_CON2FBMAP:
 		if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
 			return - EFAULT;
-		if (con2fb.console < 0 || con2fb.console > MAX_NR_CONSOLES)
+		if (con2fb.console > MAX_NR_CONSOLES)
 		    return -EINVAL;
-		if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX)
+		if (con2fb.framebuffer >= FB_MAX)
 		    return -EINVAL;
 #ifdef CONFIG_KMOD
 		if (!registered_fb[con2fb.framebuffer])
diff -ru linux-2.6.21-old/drivers/video/intelfb/intelfbdrv.c linux-2.6.21/drivers/video/intelfb/intelfbdrv.c
--- linux-2.6.21-old/drivers/video/intelfb/intelfbdrv.c	2007-05-30 02:53:13.000000000 -0400
+++ linux-2.6.21/drivers/video/intelfb/intelfbdrv.c	2007-05-30 02:30:32.000000000 -0400
@@ -1343,11 +1343,6 @@
 		break;
 	}
 
-	if (v.xoffset < 0)
-		v.xoffset = 0;
-	if (v.yoffset < 0)
-		v.yoffset = 0;
-
 	if (v.xoffset > v.xres_virtual - v.xres)
 		v.xoffset = v.xres_virtual - v.xres;
 	if (v.yoffset > v.yres_virtual - v.yres)
diff -ru linux-2.6.21-old/drivers/video/riva/fbdev.c linux-2.6.21/drivers/video/riva/fbdev.c
--- linux-2.6.21-old/drivers/video/riva/fbdev.c	2007-05-30 02:53:00.000000000 -0400
+++ linux-2.6.21/drivers/video/riva/fbdev.c	2007-05-30 02:29:05.000000000 -0400
@@ -1185,11 +1185,6 @@
 	if (rivafb_do_maximize(info, var, nom, den) < 0)
 		return -EINVAL;
 
-	if (var->xoffset < 0)
-		var->xoffset = 0;
-	if (var->yoffset < 0)
-		var->yoffset = 0;
-
 	/* truncate xoffset and yoffset to maximum if too high */
 	if (var->xoffset > var->xres_virtual - var->xres)
 		var->xoffset = var->xres_virtual - var->xres - 1;
diff -ru linux-2.6.21-old/drivers/video/vga16fb.c linux-2.6.21/drivers/video/vga16fb.c
--- linux-2.6.21-old/drivers/video/vga16fb.c	2007-05-30 02:53:01.000000000 -0400
+++ linux-2.6.21/drivers/video/vga16fb.c	2007-05-30 02:30:08.000000000 -0400
@@ -1092,7 +1092,7 @@
 	sy += (dy - old_dy);
 
 	/* the source must be completely inside the virtual screen */
-	if (sx < 0 || sy < 0 || (sx + width) > vxres || (sy + height) > vyres)
+	if ((sx + width) > vxres || (sy + height) > vyres)
 		return;
 
 	switch (info->fix.type) {
-
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