linux-kernel - Re: commit a29ccf6f823a84d89e1c7aaaf221cf7282022024 break console on slackware 12.1

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Date:	Wed, 30 Jul 2008 13:11:50 -0700
From:	Tim Bird <tim.bird@...sony.com>
To:	Grant Coady <gcoady.lk@...il.com>
CC:	Marco Berizzi <pupilla@...mail.com>,
	Alistair John Strachan <alistair@...zero.co.uk>,
	linux-kernel@...r.kernel.org, dwmw2@...radead.org
Subject: Re: commit a29ccf6f823a84d89e1c7aaaf221cf7282022024 break console
 on slackware 12.1

Grant Coady wrote:
> I have the same issue, the line drawing characters are displayed as an odd 
> looking C with a tail.  Slackware-12.1 and Slamd64-12.1.
> 
> .configs:
>   http://bugsplatter.mine.nu/test/boxen/pooh/config-2.6.27-rc1a.gz
>   http://bugsplatter.mine.nu/test/boxen/pooh64/config-2.6.27-rc1a.gz
> 
> CONFIG_CONSOLE_TRANSLATIONS=y ?? yes it's on

This looks like an operator precedence bug introduced by
the patch.

Normally I would test this myself before sending it out, but
I can't test 2.6.27-rc1 right now on my hardware due to another
bug in the 2.6.27-rc1 tree.

Can you please try the following patch and let me know if that
fixes the problem?

Thanks,
 -- Tim

diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h
index 14c0e91..8c8119f 100644
--- a/include/linux/vt_kern.h
+++ b/include/linux/vt_kern.h
@@ -74,7 +74,7 @@ void con_protect_unimap(struct vc_data *vc, int rdonly);
 int con_copy_unimap(struct vc_data *dst_vc, struct vc_data *src_vc);

 #define vc_translate(vc, c) ((vc)->vc_translate[(c) |			\
-					(vc)->vc_toggle_meta ? 0x80 : 0])
+					((vc)->vc_toggle_meta ? 0x80 : 0)])
 #else
 #define con_set_trans_old(arg) (0)
 #define con_get_trans_old(arg) (-EINVAL)



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