linux-kernel - [PATCH 1/2] video: vga16fb: Fix logic that checks for the display standard

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Message-Id: <20220107110723.323276-2-javierm@redhat.com>
Date:   Fri,  7 Jan 2022 12:07:22 +0100
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Kris Karas <bugs-a21@...nlit-rail.com>,
        Javier Martinez Canillas <javierm@...hat.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: [PATCH 1/2] video: vga16fb: Fix logic that checks for the display standard

The vga16fb framebuffer driver supports both Enhanced Graphics Adapter
(EGA) and Video Graphics Array (VGA) 16 color graphic cards.

But the logic to check whether the EGA or VGA standard are used is not
correct. It just checks if screen_info.orig_video_isVGA is set, but it
should check if is set to VIDEO_TYPE_VGAC instead.

This means that it assumes to be VGA even if is set to VIDEO_TYPE_EGAC.

Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>
---

 drivers/video/fbdev/vga16fb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index e2757ff1c23d..3347c9b6a332 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -1332,7 +1332,7 @@ static int vga16fb_probe(struct platform_device *dev)
 	printk(KERN_INFO "vga16fb: mapped to 0x%p\n", info->screen_base);
 	par = info->par;
 
-	par->isVGA = screen_info.orig_video_isVGA;
+	par->isVGA = screen_info.orig_video_isVGA == VIDEO_TYPE_VGAC;
 	par->palette_blanked = 0;
 	par->vesa_blanked = 0;
 
-- 
2.33.1