From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: [PATCH 1/7] fbdev: Don't show logo if driver or fbcon are modular Date: Mon, 09 Apr 2007 19:36:40 +0800 Message-ID: <461A2548.2080008@gmail.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1HasJV-0001dw-D0 for linux-fbdev-devel@lists.sourceforge.net; Mon, 09 Apr 2007 04:45:37 -0700 Received: from wx-out-0506.google.com ([66.249.82.226]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1HasJT-0005z9-Lu for linux-fbdev-devel@lists.sourceforge.net; Mon, 09 Apr 2007 04:45:37 -0700 Received: by wx-out-0506.google.com with SMTP id i30so2484654wxd for ; Mon, 09 Apr 2007 04:45:35 -0700 (PDT) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Andrew Morton Cc: Linux Fbdev development list It was always intended for the logo to be drawn only if both fbcon and the driver that is mapped to it are both compiled statically. Currently, if fbcon is loaded prior to the driver, the logo is not shown. Reverse the order, and the code may attempt to draw the logo which is __initdata. By accident, this bug is rarely seen because this method of loading the modules is not common and secondly, a code in fb_prepare_logo() that checks the height of the logo (now a random value) rarely succeeds. Fix by drawing the logo only if both fbcon and the driver are statically compiled. Signed-off-by: Antonino Daplas --- drivers/video/console/fbcon.c | 17 +++++++++++++++++ drivers/video/fbmem.c | 6 ++++-- 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c index f1e3e3c..0d8e107 100644 --- a/drivers/video/console/fbcon.c +++ b/drivers/video/console/fbcon.c @@ -107,7 +107,9 @@ static struct display fb_display[MAX_NR_ static signed char con2fb_map[MAX_NR_CONSOLES]; static signed char con2fb_map_boot[MAX_NR_CONSOLES]; +#ifndef MODULE static int logo_height; +#endif static int logo_lines; /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO enums. */ @@ -576,6 +578,13 @@ static int fbcon_takeover(int show_logo) return err; } +#ifdef MODULE +static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, + int cols, int rows, int new_cols, int new_rows) +{ + logo_shown = FBCON_LOGO_DONTSHOW; +} +#else static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, int cols, int rows, int new_cols, int new_rows) { @@ -584,6 +593,11 @@ static void fbcon_prepare_logo(struct vc int cnt, erase = vc->vc_video_erase_char, step; unsigned short *save = NULL, *r, *q; + if (info->flags & FBINFO_MODULE) { + logo_shown = FBCON_LOGO_DONTSHOW; + goto done; + } + /* * remove underline attribute from erase character * if black and white framebuffer. @@ -654,7 +668,10 @@ static void fbcon_prepare_logo(struct vc logo_shown = FBCON_LOGO_DRAW; vc->vc_top = logo_lines; } + +done: } +#endif /* MODULE */ #ifdef CONFIG_FB_TILEBLITTING static void set_blitting_type(struct vc_data *vc, struct fb_info *info) diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 45f3839..08c292d 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -418,7 +418,8 @@ int fb_prepare_logo(struct fb_info *info memset(&fb_logo, 0, sizeof(struct logo_data)); - if (info->flags & FBINFO_MISC_TILEBLITTING) + if (info->flags & FBINFO_MISC_TILEBLITTING || + info->flags & FBINFO_MODULE) return 0; if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { @@ -483,7 +484,8 @@ int fb_show_logo(struct fb_info *info, i struct fb_image image; /* Return if the frame buffer is not mapped or suspended */ - if (fb_logo.logo == NULL || info->state != FBINFO_STATE_RUNNING) + if (fb_logo.logo == NULL || info->state != FBINFO_STATE_RUNNING || + info->flags & FBINFO_MODULE) return 0; image.depth = 8; ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV