All of lore.kernel.org
 help / color / mirror / Atom feed
From: John Stanley <jpsinthemix@verizon.net>
To: linux-fbdev@vger.kernel.org
Subject: Patch fixing savagefb driver typo/regression in linux-3.0.0
Date: Sun, 31 Jul 2011 10:04:47 +0000	[thread overview]
Message-ID: <4E3528BF.2020601@verizon.net> (raw)

[-- Attachment #1: Type: text/plain, Size: 992 bytes --]

   I have an old T22 Thinkpad with integrated Savage/IX-MV video. As of 
linux-3.0, the video is non-functional; the PC either hard hangs 
immediately or has totally garbled video, and then hard hangs, as soon 
as I attempt to edit a file or cat a file with more than a screen-full 
of text. The foregoing details are actually not important any more as in 
looking at the code changes I discovered a typo in
linux-3.0.0/drivers/video/savage/savagefb.h and have applied the 
attached patch to fix the issue.

PLEASE NOTE:
   I realize that the patch does not quite adhere to linux kernel patch 
coding-style conventions (in particular, spaces around logical 
operators, and lines not exceeding 80 chars), but I have simply changed an
'||' to an '&&' -- and NOT attempted to resolve pre-existing 
coding-style violations.

thanks much,
John

P.S. Many, many thanks for lifting the 800x600 resolution limit! I've 
been using a patch/hack to bump the limit to 1024x768 for an very long 
time...


[-- Attachment #2: linux-3.0.0-savagefb-savage4-series-def-fix.patch --]
[-- Type: text/plain, Size: 1290 bytes --]

This patch corrects a typo/regression in the savage driver code occurring in going
from linux-2.6.39.3 to linux-3.0.0.

In linux-2.6.39.3, there were two savage4 variants (S3_SAVAGE4 and S3_PROSAVAGE).
Hence, S3_SAVAGE4_SERIES was defined as

  S3_SAVAGE4 or S3_PROSAVAGE

In linux-3.0.0, two additional savage4 variants (S3_TWISTER and S3_PROSAVAGEDDR) have
been added. Hence S3_SAVAGE4_SERIES should be defined as

  S3_SAVAGE4, S3_PROSAVAGE, S3_TWISTER, or S3_PROSAVAGEDDR

In going from linux-2.6.39.3 to linux-3.0.0, the define statement for S3_SAVAGE4_SERIES
was incompletely modified: the '||' should have been changed to an '&&'; for an '||' will
set S3_SAVAGE4_SERIES true for any card.

Signed-off-by: John P. Stanley <jpsinthemix@verizon.net>

--- linux-3.0.0/drivers/video/savage/savagefb.h.orig	2011-07-21 22:17:23.000000000 -0400
+++ linux-3.0.0/drivers/video/savage/savagefb.h	2011-07-31 05:27:47.314798215 -0400
@@ -55,7 +55,7 @@
 
 #define S3_SAVAGE3D_SERIES(chip)  ((chip>=S3_SAVAGE3D) && (chip<=S3_SAVAGE_MX))
 
-#define S3_SAVAGE4_SERIES(chip)   ((chip>=S3_SAVAGE4) || (chip<=S3_PROSAVAGEDDR))
+#define S3_SAVAGE4_SERIES(chip)   ((chip>=S3_SAVAGE4) && (chip<=S3_PROSAVAGEDDR))
 
 #define S3_SAVAGE_MOBILE_SERIES(chip)  ((chip==S3_SAVAGE_MX) || (chip==S3_SUPERSAVAGE))
 

             reply	other threads:[~2011-07-31 10:04 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-07-31 10:04 John Stanley [this message]
  -- strict thread matches above, loose matches on Subject: below --
2011-08-01 22:56 Patch fixing savagefb driver typo/regression in linux-3.0.0 Tormod Volden

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4E3528BF.2020601@verizon.net \
    --to=jpsinthemix@verizon.net \
    --cc=linux-fbdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.