linux-kernel - [PATCH v2 04/19] fbcon: delete delayed loading code

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Date:   Tue,  8 Feb 2022 22:08:09 +0100
From:   Daniel Vetter <daniel.vetter@...ll.ch>
To:     DRI Development <dri-devel@...ts.freedesktop.org>
Cc:     Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        linux-fbdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Helge Deller <deller@....de>, Daniel Vetter <daniel@...ll.ch>,
        Claudio Suarez <cssk@...-c.es>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Du Cheng <ducheng2@...il.com>
Subject: [PATCH v2 04/19] fbcon: delete delayed loading code

Before

commit 6104c37094e729f3d4ce65797002112735d49cd1
Author: Daniel Vetter <daniel.vetter@...ll.ch>
Date:   Tue Aug 1 17:32:07 2017 +0200

    fbcon: Make fbcon a built-time depency for fbdev

it was possible to load fbcon and fbdev drivers in any order, which
means that fbcon init had to handle the case where fbdev drivers where
already registered.

This is no longer possible, hence delete that code.

Note that the exit case is a bit more complex and will be done in a
separate patch.

Since I had to audit the entire fbcon load code I also spotted a wrong
function name in a comment in fbcon_startup(), which this patch also
fixes.

v2: Explain why we also fix the comment (Sam)

Acked-by: Sam Ravnborg <sam@...nborg.org>
Signed-off-by: Daniel Vetter <daniel.vetter@...el.com>
Cc: Helge Deller <deller@....de>
Cc: Daniel Vetter <daniel@...ll.ch>
Cc: Claudio Suarez <cssk@...-c.es>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc: Du Cheng <ducheng2@...il.com>
---
 drivers/video/fbdev/core/fbcon.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index b75e638cb83d..83f0223f5333 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -944,7 +944,7 @@ static const char *fbcon_startup(void)
 		return display_desc;
 	/*
 	 * Instead of blindly using registered_fb[0], we use info_idx, set by
-	 * fb_console_init();
+	 * fbcon_fb_registered();
 	 */
 	info = registered_fb[info_idx];
 	if (!info)
@@ -3299,17 +3299,6 @@ static void fbcon_start(void)
 		return;
 	}
 #endif
-
-	if (num_registered_fb) {
-		int i;
-
-		for_each_registered_fb(i) {
-			info_idx = i;
-			break;
-		}
-
-		do_fbcon_takeover(0);
-	}
 }
 
 static void fbcon_exit(void)
-- 
2.34.1