AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/parisc/kernel
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Guy Martin fbea668498 parisc : Remove broken line wrapping handling pdc_iodc_print() 
Remove the broken line wrapping handling in pdc_iodc_print().
It is broken in 3 ways :
  - It doesn't keep track of the current screen position, it just
    assumes that the new buffer will be printed at the begining of the
    screen.
  - It doesn't take in account that non printable characters won't
    increase the current position on the screen.
  - And last but not least, it triggers a kernel panic if a backspace
    is the first char in the provided buffer :

 Backtrace:
  [<0000000040128ec4>] pdc_console_write+0x44/0x78
  [<0000000040128f18>] pdc_console_tty_write+0x20/0x38
  [<000000004032f1ac>] n_tty_write+0x2a4/0x550
  [<000000004032b158>] tty_write+0x1e0/0x2d8
  [<00000000401bb420>] vfs_write+0xb8/0x188
  [<00000000401bb630>] sys_write+0x68/0xb8
  [<0000000040104eb8>] syscall_exit+0x0/0x14

Most terminals handle the line wrapping just fine. I've confirmed that
it works correctly on a C8000 with both vga and serial output.

Signed-off-by: Guy Martin <gmsoft@tuxicoman.be>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2011-01-15 08:39:08 -06:00
..
.gitignore parisc: add arch/parisc/kernel/.gitignore 2008-10-10 16:32:28 +00:00
asm-offsets.c parisc: Use of align_frame provides stack frame. 2010-05-30 05:38:27 -04:00
binfmt_elf32.c [PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITY 2008-10-16 15:40:05 +02:00
cache.c parisc: remove trailing space in messages 2010-03-06 22:54:09 +00:00
drivers.c parisc: add uevent helper for parisc bus 2009-01-05 19:11:59 +00:00
entry.S parisc: Remove unnecessary macros from entry.S 2010-05-30 05:47:28 -04:00
firmware.c parisc : Remove broken line wrapping handling pdc_iodc_print() 2011-01-15 08:39:08 -06:00
ftrace.c sched_clock: Add local_clock() API and improve documentation 2010-06-09 10:34:49 +02:00
hardware.c [PARISC] add back Crestone Peak cpu 2008-03-15 19:12:19 -07:00
head.S Rename .data.read_mostly to .data..read_mostly. 2010-03-03 11:26:00 +01:00
hpmc.S parisc: export length of os_hpmc vector 2009-01-05 19:18:27 +00:00
init_task.c Rename .data.vmpages and .data.vm0.XXX to .data..vmpages and .data..vm0.XXX. 2010-03-03 11:26:00 +01:00
inventory.c parisc: inventory.c, fix bloated stack frame 2009-07-03 03:34:11 +00:00
irq.c parisc: convert the rest of the irq handlers to simple/percpu 2010-12-04 11:15:19 -05:00
Makefile parisc: add ftrace (function and graph tracer) functionality 2009-03-31 02:51:34 +00:00
module.c modules: Fix module_bug_list list corruption race 2010-10-05 11:29:27 -07:00
pa7300lc.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pacache.S Revert "parisc: fix trivial section name warnings" 2008-06-13 10:49:45 -04:00
parisc_ksyms.c parisc: add ftrace (function and graph tracer) functionality 2009-03-31 02:51:34 +00:00
pci-dma.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pci.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pdc_chassis.c [PARISC] Work around machines which do not support chassis warnings 2006-06-27 23:28:37 +00:00
pdc_cons.c parisc: cleanup console handling 2010-11-16 12:50:18 -08:00
perf_asm.S Revert "parisc: fix trivial section name warnings" 2008-06-13 10:49:45 -04:00
perf_images.h [PARISC] Use kzalloc and other janitor-style cleanups 2006-01-22 20:26:31 -05:00
perf.c parisc: remove big kernel lock 2010-10-16 22:43:08 +02:00
process.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
processor.c parisc: processor.c, fix bloated stack frame 2009-07-03 03:34:11 +00:00
ptrace.c ptrace: cleanup arch_ptrace() on parisc 2010-10-27 18:03:11 -07:00
real2.S parisc: move pdc_result to real2.S 2008-10-10 16:32:28 +00:00
setup.c parisc: remove CVS keywords 2009-07-03 03:34:06 +00:00
signal32.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
signal32.h [PARISC] spelling fixes: arch/parisc/ 2007-05-22 22:52:16 -04:00
signal.c parisc: remove redundant initialization in sigsegv path of sys_rt_sigreturn 2010-11-29 20:34:38 -05:00
smp.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
stacktrace.c parisc: add LATENCYTOP_SUPPORT and CONFIG_STACKTRACE_SUPPORT 2009-03-31 02:51:34 +00:00
sys32.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys_parisc32.c BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
sys_parisc.c improve sys_newuname() for compat architectures 2010-03-12 15:52:32 -08:00
syscall_table.S parisc: add prlimit64 syscall 2010-10-13 20:35:56 -04:00
syscall.S parisc: LWS fixes for syscall.S 2010-05-30 05:46:37 -04:00
time.c parisc: Convert to read/update_persistent_clock 2010-03-06 22:54:10 +00:00
topology.c parisc: Replace NR_CPUS in parisc code 2009-01-05 19:09:02 +00:00
traps.c parisc: fix warning in traps.c 2009-08-28 19:37:20 -10:00
unaligned.c arch/parisc: Removing undead ifdef CONFIG_PA20 2010-10-21 21:13:29 -04:00
unwind.c parisc: unwind - optimise linked-list searches for modules 2010-10-21 21:12:19 -04:00
vmlinux.lds.S Rename .data.lock_aligned to .data..lock_aligned. 2010-03-03 11:26:01 +01:00