linux-kernel - [PATCH] tgafb: Remove a redundant non-mono test in mono imageblit

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Date:	Mon, 15 Oct 2007 18:42:07 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Antonino Daplas <adaplas@....net>,
	linux-fbdev-devel@...ts.sourceforge.net
cc:	Jay Estabrook <Jay.Estabrook@...com>, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] tgafb: Remove a redundant non-mono test in mono imageblit

 There is a test in tgafb_mono_imageblit() for a colour image with a 
fall-back to cfb_imageblit().  The test is not necessary as the only 
caller, which is tgafb_imageblit(), checks it too and only invokes this 
function for monochrome images.  It looks like a left-over from before 
some changes to tgafb_imageblit().

Signed-off-by: Maciej W. Rozycki <macro@...ux-mips.org>
---
 Checked with checkpatch.pl and at the run time with an 8-bit TC frame
buffer on a MIPS host.

 Please apply.

  Maciej

patch-mips-2.6.23-rc5-20070904-tgafb-mono_imageblit-depth-0
diff -up --recursive --new-file linux-mips-2.6.23-rc5-20070904.macro/drivers/video/tgafb.c linux-mips-2.6.23-rc5-20070904/drivers/video/tgafb.c
--- linux-mips-2.6.23-rc5-20070904.macro/drivers/video/tgafb.c	2007-09-04 04:55:46.000000000 +0000
+++ linux-mips-2.6.23-rc5-20070904/drivers/video/tgafb.c	2007-10-14 20:32:13.000000000 +0000
@@ -636,15 +636,6 @@ tgafb_mono_imageblit(struct fb_info *inf
 
 	is8bpp = info->var.bits_per_pixel == 8;
 
-	/* For copies that aren't pixel expansion, there's little we
-	   can do better than the generic code.  */
-	/* ??? There is a DMA write mode; I wonder if that could be
-	   made to pull the data from the image buffer...  */
-	if (image->depth > 1) {
-		cfb_imageblit(info, image);
-		return;
-	}
-
 	dx = image->dx;
 	dy = image->dy;
 	width = image->width;
-
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