From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Mon, 11 Jul 2022 15:35:48 +0000 (+0200)
Subject: video: fbdev: amiga: Simplify amifb_pan_display()
X-Git-Tag: v6.6.17~6852^2~26
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2194f9576097543e26fa690abaa7166754fccabe;p=platform%2Fkernel%2Flinux-rpi.git

video: fbdev: amiga: Simplify amifb_pan_display()

The fb_pan_display() function in the core already takes care of
validating most panning parameters before calling the driver's
.fb_pan_display() callback, and of updating the panning state
afterwards, so there is no need to repeat that in the driver.

Remove the duplicate code.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Helge Deller <deller@gmx.de>
---

diff --git a/drivers/video/fbdev/amifb.c b/drivers/video/fbdev/amifb.c
index 6e07a97..d88265d 100644
--- a/drivers/video/fbdev/amifb.c
+++ b/drivers/video/fbdev/amifb.c
@@ -2540,27 +2540,16 @@ static int amifb_blank(int blank, struct fb_info *info)
 static int amifb_pan_display(struct fb_var_screeninfo *var,
 			     struct fb_info *info)
 {
-	if (var->vmode & FB_VMODE_YWRAP) {
-		if (var->yoffset < 0 ||
-			var->yoffset >= info->var.yres_virtual || var->xoffset)
-				return -EINVAL;
-	} else {
+	if (!(var->vmode & FB_VMODE_YWRAP)) {
 		/*
 		 * TODO: There will be problems when xpan!=1, so some columns
 		 * on the right side will never be seen
 		 */
 		if (var->xoffset + info->var.xres >
-		    upx(16 << maxfmode, info->var.xres_virtual) ||
-		    var->yoffset + info->var.yres > info->var.yres_virtual)
+		    upx(16 << maxfmode, info->var.xres_virtual))
 			return -EINVAL;
 	}
 	ami_pan_var(var, info);
-	info->var.xoffset = var->xoffset;
-	info->var.yoffset = var->yoffset;
-	if (var->vmode & FB_VMODE_YWRAP)
-		info->var.vmode |= FB_VMODE_YWRAP;
-	else
-		info->var.vmode &= ~FB_VMODE_YWRAP;
 	return 0;
 }