lkml.org 
[lkml]   [2010]   [Aug]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[04/38] parisc: pass through \t to early (iodc) console
2.6.35-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Kyle McMartin <kyle@mcmartin.ca>

commit d9b68e5e88248bb24fd4e455588bea1d56108fd6 upstream.

The firmware handles '\t' internally, so stop trying to emulate it
(which, incidentally, had a bug in it.)

Fixes a really weird hang at bootup in rcu_bootup_announce, which,
as far as I can tell, is the first printk in the core kernel to use
a tab as the first character.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
arch/parisc/kernel/firmware.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -1123,7 +1123,6 @@ static char __attribute__((aligned(64)))
*/
int pdc_iodc_print(const unsigned char *str, unsigned count)
{
- static int posx; /* for simple TAB-Simulation... */
unsigned int i;
unsigned long flags;

@@ -1133,19 +1132,12 @@ int pdc_iodc_print(const unsigned char *
iodc_dbuf[i+0] = '\r';
iodc_dbuf[i+1] = '\n';
i += 2;
- posx = 0;
goto print;
- case '\t':
- while (posx & 7) {
- iodc_dbuf[i] = ' ';
- i++, posx++;
- }
- break;
case '\b': /* BS */
- posx -= 2;
+ i--; /* overwrite last */
default:
iodc_dbuf[i] = str[i];
- i++, posx++;
+ i++;
break;
}
}



\
 
 \ /
  Last update: 2010-08-06 20:45    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site