linux-kernel - [PATCH] video/macfb: Always initialize DAFB colour table pointer register

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Message-Id: <7396d7b11366fe9ee362cb140e74dd391e66e2d6.1550529894.git.fthain@telegraphics.com.au>
Date:   Tue, 19 Feb 2019 09:44:54 +1100
From:   Finn Thain <fthain@...egraphics.com.au>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     linux-m68k@...ts.linux-m68k.org, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] video/macfb: Always initialize DAFB colour table pointer
 register

Don't skip the framebuffer CLUT pointer register initialization when
the first dafb_setpalette() invocation has regno equal to zero.

Cc: linux-m68k@...ts.linux-m68k.org
Suggested-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: Finn Thain <fthain@...egraphics.com.au>
---
 drivers/video/fbdev/macfb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/macfb.c b/drivers/video/fbdev/macfb.c
index 37c56c45ee39..8820a556014c 100644
--- a/drivers/video/fbdev/macfb.c
+++ b/drivers/video/fbdev/macfb.c
@@ -148,7 +148,7 @@ static int dafb_setpalette(unsigned int regno, unsigned int red,
 			   unsigned int green, unsigned int blue,
 			   struct fb_info *info)
 {
-	static int lastreg = -1;
+	static int lastreg = -2;
 	unsigned long flags;
 
 	local_irq_save(flags);
-- 
2.19.2